Messages in this thread Patch in this message | | | Date | Mon, 14 Dec 2009 10:05:50 -0800 | From | Greg KH <> | Subject | Re: Linux 2.6.32.1 |
| |
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt index 6d94e06..af6885c 100644 --- a/Documentation/filesystems/ext4.txt +++ b/Documentation/filesystems/ext4.txt @@ -153,8 +153,8 @@ journal_dev=devnum When the external journal device's major/minor numbers identified through its new major/minor numbers encoded in devnum. -noload Don't load the journal on mounting. Note that - if the filesystem was not unmounted cleanly, +norecovery Don't load the journal on mounting. Note that +noload if the filesystem was not unmounted cleanly, skipping the journal replay will lead to the filesystem containing inconsistencies that can lead to any number of problems. @@ -353,6 +353,12 @@ noauto_da_alloc replacing existing files via patterns such as system crashes before the delayed allocation blocks are forced to disk. +discard Controls whether ext4 should issue discard/TRIM +nodiscard(*) commands to the underlying block device when + blocks are freed. This is useful for SSD devices + and sparse/thinly-provisioned LUNs, but it is off + by default until sufficient testing has been done. + Data Mode ========= There are 3 different data modes: diff --git a/Makefile b/Makefile index f5cdb72..d0d7e9c 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 2 PATCHLEVEL = 6 SUBLEVEL = 32 -EXTRAVERSION = +EXTRAVERSION = .1 NAME = Man-Eating Seals of Antiquity # *DOCUMENTATION* diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index c968cc3..554626e 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -180,14 +180,20 @@ void scsi_remove_host(struct Scsi_Host *shost) EXPORT_SYMBOL(scsi_remove_host); /** - * scsi_add_host - add a scsi host + * scsi_add_host_with_dma - add a scsi host with dma device * @shost: scsi host pointer to add * @dev: a struct device of type scsi class + * @dma_dev: dma device for the host + * + * Note: You rarely need to worry about this unless you're in a + * virtualised host environments, so use the simpler scsi_add_host() + * function instead. * * Return value: * 0 on success / != 0 for error **/ -int scsi_add_host(struct Scsi_Host *shost, struct device *dev) +int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev, + struct device *dma_dev) { struct scsi_host_template *sht = shost->hostt; int error = -EINVAL; @@ -207,6 +213,7 @@ int scsi_add_host(struct Scsi_Host *shost, struct device *dev) if (!shost->shost_gendev.parent) shost->shost_gendev.parent = dev ? dev : &platform_bus; + shost->dma_dev = dma_dev; error = device_add(&shost->shost_gendev); if (error) @@ -262,7 +269,7 @@ int scsi_add_host(struct Scsi_Host *shost, struct device *dev) fail: return error; } -EXPORT_SYMBOL(scsi_add_host); +EXPORT_SYMBOL(scsi_add_host_with_dma); static void scsi_host_dev_release(struct device *dev) { diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 562d8ce..f913f1e 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -2408,7 +2408,7 @@ lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev) vport->els_tmofunc.function = lpfc_els_timeout; vport->els_tmofunc.data = (unsigned long)vport; - error = scsi_add_host(shost, dev); + error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev); if (error) goto out_put_shost; diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index a39addc..507ccc6 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -3032,7 +3032,7 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance, int error = 0, i; void *sense = NULL; dma_addr_t sense_handle; - u32 *sense_ptr; + unsigned long *sense_ptr; memset(kbuff_arr, 0, sizeof(kbuff_arr)); @@ -3109,7 +3109,7 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance, } sense_ptr = - (u32 *) ((unsigned long)cmd->frame + ioc->sense_off); + (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); *sense_ptr = sense_handle; } @@ -3140,8 +3140,8 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance, * sense_ptr points to the location that has the user * sense buffer address */ - sense_ptr = (u32 *) ((unsigned long)ioc->frame.raw + - ioc->sense_off); + sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + + ioc->sense_off); if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), sense, ioc->sense_len)) { diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index fbcb82a..21e2bc4 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -1654,7 +1654,8 @@ qla24xx_vport_create(struct fc_vport *fc_vport, bool disable) fc_vport_set_state(fc_vport, FC_VPORT_LINKDOWN); } - if (scsi_add_host(vha->host, &fc_vport->dev)) { + if (scsi_add_host_with_dma(vha->host, &fc_vport->dev, + &ha->pdev->dev)) { DEBUG15(printk("scsi(%ld): scsi_add_host failure for VP[%d].\n", vha->host_no, vha->vp_idx)); goto vport_create_failed_2; diff --git a/drivers/scsi/scsi_lib_dma.c b/drivers/scsi/scsi_lib_dma.c index ac6855c..dcd1285 100644 --- a/drivers/scsi/scsi_lib_dma.c +++ b/drivers/scsi/scsi_lib_dma.c @@ -23,7 +23,7 @@ int scsi_dma_map(struct scsi_cmnd *cmd) int nseg = 0; if (scsi_sg_count(cmd)) { - struct device *dev = cmd->device->host->shost_gendev.parent; + struct device *dev = cmd->device->host->dma_dev; nseg = dma_map_sg(dev, scsi_sglist(cmd), scsi_sg_count(cmd), cmd->sc_data_direction); @@ -41,7 +41,7 @@ EXPORT_SYMBOL(scsi_dma_map); void scsi_dma_unmap(struct scsi_cmnd *cmd) { if (scsi_sg_count(cmd)) { - struct device *dev = cmd->device->host->shost_gendev.parent; + struct device *dev = cmd->device->host->dma_dev; dma_unmap_sg(dev, scsi_sglist(cmd), scsi_sg_count(cmd), cmd->sc_data_direction); diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index 1d04189..f3032c9 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -761,7 +761,13 @@ static unsigned long ext4_bg_num_gdb_meta(struct super_block *sb, static unsigned long ext4_bg_num_gdb_nometa(struct super_block *sb, ext4_group_t group) { - return ext4_bg_has_super(sb, group) ? EXT4_SB(sb)->s_gdb_count : 0; + if (!ext4_bg_has_super(sb, group)) + return 0; + + if (EXT4_HAS_INCOMPAT_FEATURE(sb,EXT4_FEATURE_INCOMPAT_META_BG)) + return le32_to_cpu(EXT4_SB(sb)->s_es->s_first_meta_bg); + else + return EXT4_SB(sb)->s_gdb_count; } /** diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c index 50784ef..dc79b75 100644 --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -160,7 +160,7 @@ int ext4_setup_system_zone(struct super_block *sb) if (ext4_bg_has_super(sb, i) && ((i < 5) || ((i % flex_size) == 0))) add_system_zone(sbi, ext4_group_first_block_no(sb, i), - sbi->s_gdb_count + 1); + ext4_bg_num_gdb(sb, i) + 1); gdp = ext4_get_group_desc(sb, i, NULL); ret = add_system_zone(sbi, ext4_block_bitmap(sb, gdp), 1); if (ret) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 8825515..bd2a9dd 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -703,6 +703,13 @@ struct ext4_inode_info { struct list_head i_aio_dio_complete_list; /* current io_end structure for async DIO write*/ ext4_io_end_t *cur_aio_dio; + + /* + * Transactions that contain inode's metadata needed to complete + * fsync and fdatasync, respectively. + */ + tid_t i_sync_tid; + tid_t i_datasync_tid; }; /* @@ -750,6 +757,7 @@ struct ext4_inode_info { #define EXT4_MOUNT_DELALLOC 0x8000000 /* Delalloc support */ #define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 /* Abort on file data write */ #define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 /* Block validity checking */ +#define EXT4_MOUNT_DISCARD 0x40000000 /* Issue DISCARD requests */ #define clear_opt(o, opt) o &= ~EXT4_MOUNT_##opt #define set_opt(o, opt) o |= EXT4_MOUNT_##opt diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h index a286598..1892a77 100644 --- a/fs/ext4/ext4_jbd2.h +++ b/fs/ext4/ext4_jbd2.h @@ -49,7 +49,7 @@ #define EXT4_DATA_TRANS_BLOCKS(sb) (EXT4_SINGLEDATA_TRANS_BLOCKS(sb) + \ EXT4_XATTR_TRANS_BLOCKS - 2 + \ - 2*EXT4_QUOTA_TRANS_BLOCKS(sb)) + EXT4_MAXQUOTAS_TRANS_BLOCKS(sb)) /* * Define the number of metadata blocks we need to account to modify data. @@ -57,7 +57,7 @@ * This include super block, inode block, quota blocks and xattr blocks */ #define EXT4_META_TRANS_BLOCKS(sb) (EXT4_XATTR_TRANS_BLOCKS + \ - 2*EXT4_QUOTA_TRANS_BLOCKS(sb)) + EXT4_MAXQUOTAS_TRANS_BLOCKS(sb)) /* Delete operations potentially hit one directory's namespace plus an * entire inode, plus arbitrary amounts of bitmap/indirection data. Be @@ -92,6 +92,7 @@ * but inode, sb and group updates are done only once */ #define EXT4_QUOTA_INIT_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_INIT_ALLOC*\ (EXT4_SINGLEDATA_TRANS_BLOCKS(sb)-3)+3+DQUOT_INIT_REWRITE) : 0) + #define EXT4_QUOTA_DEL_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_DEL_ALLOC*\ (EXT4_SINGLEDATA_TRANS_BLOCKS(sb)-3)+3+DQUOT_DEL_REWRITE) : 0) #else @@ -99,6 +100,9 @@ #define EXT4_QUOTA_INIT_BLOCKS(sb) 0 #define EXT4_QUOTA_DEL_BLOCKS(sb) 0 #endif +#define EXT4_MAXQUOTAS_TRANS_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_TRANS_BLOCKS(sb)) +#define EXT4_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_INIT_BLOCKS(sb)) +#define EXT4_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_DEL_BLOCKS(sb)) int ext4_mark_iloc_dirty(handle_t *handle, @@ -254,6 +258,19 @@ static inline int ext4_jbd2_file_inode(handle_t *handle, struct inode *inode) return 0; } +static inline void ext4_update_inode_fsync_trans(handle_t *handle, + struct inode *inode, + int datasync) +{ + struct ext4_inode_info *ei = EXT4_I(inode); + + if (ext4_handle_valid(handle)) { + ei->i_sync_tid = handle->h_transaction->t_tid; + if (datasync) + ei->i_datasync_tid = handle->h_transaction->t_tid; + } +} + /* super.c */ int ext4_force_commit(struct super_block *sb); diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 715264b..8b8bae4 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -1761,7 +1761,9 @@ int ext4_ext_walk_space(struct inode *inode, ext4_lblk_t block, while (block < last && block != EXT_MAX_BLOCK) { num = last - block; /* find extent for this block */ + down_read(&EXT4_I(inode)->i_data_sem); path = ext4_ext_find_extent(inode, block, path); + up_read(&EXT4_I(inode)->i_data_sem); if (IS_ERR(path)) { err = PTR_ERR(path); path = NULL; @@ -2074,7 +2076,7 @@ static int ext4_remove_blocks(handle_t *handle, struct inode *inode, ext_debug("free last %u blocks starting %llu\n", num, start); for (i = 0; i < num; i++) { bh = sb_find_get_block(inode->i_sb, start + i); - ext4_forget(handle, 0, inode, bh, start + i); + ext4_forget(handle, metadata, inode, bh, start + i); } ext4_free_blocks(handle, inode, start, num, metadata); } else if (from == le32_to_cpu(ex->ee_block) @@ -2167,7 +2169,7 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode, correct_index = 1; credits += (ext_depth(inode)) + 1; } - credits += 2 * EXT4_QUOTA_TRANS_BLOCKS(inode->i_sb); + credits += EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb); err = ext4_ext_truncate_extend_restart(handle, inode, credits); if (err) @@ -3064,6 +3066,8 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, if (flags == EXT4_GET_BLOCKS_DIO_CONVERT_EXT) { ret = ext4_convert_unwritten_extents_dio(handle, inode, path); + if (ret >= 0) + ext4_update_inode_fsync_trans(handle, inode, 1); goto out2; } /* buffered IO case */ @@ -3091,6 +3095,8 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, ret = ext4_ext_convert_to_initialized(handle, inode, path, iblock, max_blocks); + if (ret >= 0) + ext4_update_inode_fsync_trans(handle, inode, 1); out: if (ret <= 0) { err = ret; @@ -3329,10 +3335,16 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode, allocated = ext4_ext_get_actual_len(&newex); set_buffer_new(bh_result); - /* Cache only when it is _not_ an uninitialized extent */ - if ((flags & EXT4_GET_BLOCKS_UNINIT_EXT) == 0) + /* + * Cache the extent and update transaction to commit on fdatasync only + * when it is _not_ an uninitialized extent. + */ + if ((flags & EXT4_GET_BLOCKS_UNINIT_EXT) == 0) { ext4_ext_put_in_cache(inode, iblock, allocated, newblock, EXT4_EXT_CACHE_EXTENT); + ext4_update_inode_fsync_trans(handle, inode, 1); + } else + ext4_update_inode_fsync_trans(handle, inode, 0); out: if (allocated > max_blocks) allocated = max_blocks; @@ -3720,10 +3732,8 @@ int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, * Walk the extent tree gathering extent information. * ext4_ext_fiemap_cb will push extents back to user. */ - down_read(&EXT4_I(inode)->i_data_sem); error = ext4_ext_walk_space(inode, start_blk, len_blks, ext4_ext_fiemap_cb, fieinfo); - up_read(&EXT4_I(inode)->i_data_sem); } return error; diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index 2b15312..d6049e4 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -51,25 +51,30 @@ int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync) { struct inode *inode = dentry->d_inode; + struct ext4_inode_info *ei = EXT4_I(inode); journal_t *journal = EXT4_SB(inode->i_sb)->s_journal; - int err, ret = 0; + int ret; + tid_t commit_tid; J_ASSERT(ext4_journal_current_handle() == NULL); trace_ext4_sync_file(file, dentry, datasync); + if (inode->i_sb->s_flags & MS_RDONLY) + return 0; + ret = flush_aio_dio_completed_IO(inode); if (ret < 0) - goto out; + return ret; + + if (!journal) + return simple_fsync(file, dentry, datasync); + /* - * data=writeback: + * data=writeback,ordered: * The caller's filemap_fdatawrite()/wait will sync the data. - * sync_inode() will sync the metadata - * - * data=ordered: - * The caller's filemap_fdatawrite() will write the data and - * sync_inode() will write the inode if it is dirty. Then the caller's - * filemap_fdatawait() will wait on the pages. + * Metadata is in the journal, we wait for proper transaction to + * commit here. * * data=journal: * filemap_fdatawrite won't do anything (the buffers are clean). @@ -79,32 +84,13 @@ int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync) * (they were dirtied by commit). But that's OK - the blocks are * safe in-journal, which is all fsync() needs to ensure. */ - if (ext4_should_journal_data(inode)) { - ret = ext4_force_commit(inode->i_sb); - goto out; - } + if (ext4_should_journal_data(inode)) + return ext4_force_commit(inode->i_sb); - if (!journal) - ret = sync_mapping_buffers(inode->i_mapping); - - if (datasync && !(inode->i_state & I_DIRTY_DATASYNC)) - goto out; - - /* - * The VFS has written the file data. If the inode is unaltered - * then we need not start a commit. - */ - if (inode->i_state & (I_DIRTY_SYNC|I_DIRTY_DATASYNC)) { - struct writeback_control wbc = { - .sync_mode = WB_SYNC_ALL, - .nr_to_write = 0, /* sys_fsync did this */ - }; - err = sync_inode(inode, &wbc); - if (ret == 0) - ret = err; - } -out: - if (journal && (journal->j_flags & JBD2_BARRIER)) + commit_tid = datasync ? ei->i_datasync_tid : ei->i_sync_tid; + if (jbd2_log_start_commit(journal, commit_tid)) + jbd2_log_wait_commit(journal, commit_tid); + else if (journal->j_flags & JBD2_BARRIER) blkdev_issue_flush(inode->i_sb->s_bdev, NULL); return ret; } diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 2c8caa5..1dae9a4 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1021,10 +1021,12 @@ static int ext4_ind_get_blocks(handle_t *handle, struct inode *inode, if (!err) err = ext4_splice_branch(handle, inode, iblock, partial, indirect_blks, count); - else + if (err) goto cleanup; set_buffer_new(bh_result); + + ext4_update_inode_fsync_trans(handle, inode, 1); got_it: map_bh(bh_result, inode->i_sb, le32_to_cpu(chain[depth-1].key)); if (count > blocks_to_boundary) @@ -1052,7 +1054,7 @@ qsize_t ext4_get_reserved_space(struct inode *inode) EXT4_I(inode)->i_reserved_meta_blocks; spin_unlock(&EXT4_I(inode)->i_block_reservation_lock); - return total; + return (total << inode->i_blkbits); } /* * Calculate the number of metadata blocks need to reserve @@ -1534,6 +1536,16 @@ static int do_journal_get_write_access(handle_t *handle, return ext4_journal_get_write_access(handle, bh); } +/* + * Truncate blocks that were not used by write. We have to truncate the + * pagecache as well so that corresponding buffers get properly unmapped. + */ +static void ext4_truncate_failed_write(struct inode *inode) +{ + truncate_inode_pages(inode->i_mapping, inode->i_size); + ext4_truncate(inode); +} + static int ext4_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata) @@ -1599,7 +1611,7 @@ retry: ext4_journal_stop(handle); if (pos + len > inode->i_size) { - ext4_truncate(inode); + ext4_truncate_failed_write(inode); /* * If truncate failed early the inode might * still be on the orphan list; we need to @@ -1709,7 +1721,7 @@ static int ext4_ordered_write_end(struct file *file, ret = ret2; if (pos + len > inode->i_size) { - ext4_truncate(inode); + ext4_truncate_failed_write(inode); /* * If truncate failed early the inode might still be * on the orphan list; we need to make sure the inode @@ -1751,7 +1763,7 @@ static int ext4_writeback_write_end(struct file *file, ret = ret2; if (pos + len > inode->i_size) { - ext4_truncate(inode); + ext4_truncate_failed_write(inode); /* * If truncate failed early the inode might still be * on the orphan list; we need to make sure the inode @@ -1814,7 +1826,7 @@ static int ext4_journalled_write_end(struct file *file, if (!ret) ret = ret2; if (pos + len > inode->i_size) { - ext4_truncate(inode); + ext4_truncate_failed_write(inode); /* * If truncate failed early the inode might still be * on the orphan list; we need to make sure the inode @@ -2788,7 +2800,7 @@ static int ext4_da_writepages_trans_blocks(struct inode *inode) * number of contiguous block. So we will limit * number of contiguous block to a sane value */ - if (!(inode->i_flags & EXT4_EXTENTS_FL) && + if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) && (max_blocks > EXT4_MAX_TRANS_DATA)) max_blocks = EXT4_MAX_TRANS_DATA; @@ -3091,7 +3103,7 @@ retry: * i_size_read because we hold i_mutex. */ if (pos + len > inode->i_size) - ext4_truncate(inode); + ext4_truncate_failed_write(inode); } if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) @@ -4120,6 +4132,8 @@ static void ext4_clear_blocks(handle_t *handle, struct inode *inode, __le32 *last) { __le32 *p; + int is_metadata = S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode); + if (try_to_extend_transaction(handle, inode)) { if (bh) { BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata"); @@ -4150,11 +4164,11 @@ static void ext4_clear_blocks(handle_t *handle, struct inode *inode, *p = 0; tbh = sb_find_get_block(inode->i_sb, nr); - ext4_forget(handle, 0, inode, tbh, nr); + ext4_forget(handle, is_metadata, inode, tbh, nr); } } - ext4_free_blocks(handle, inode, block_to_free, count, 0); + ext4_free_blocks(handle, inode, block_to_free, count, is_metadata); } /** @@ -4781,8 +4795,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) struct ext4_iloc iloc; struct ext4_inode *raw_inode; struct ext4_inode_info *ei; - struct buffer_head *bh; struct inode *inode; + journal_t *journal = EXT4_SB(sb)->s_journal; long ret; int block; @@ -4793,11 +4807,11 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) return inode; ei = EXT4_I(inode); + iloc.bh = 0; ret = __ext4_get_inode_loc(inode, &iloc, 0); if (ret < 0) goto bad_inode; - bh = iloc.bh; raw_inode = ext4_raw_inode(&iloc); inode->i_mode = le16_to_cpu(raw_inode->i_mode); inode->i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low); @@ -4820,7 +4834,6 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) if (inode->i_mode == 0 || !(EXT4_SB(inode->i_sb)->s_mount_state & EXT4_ORPHAN_FS)) { /* this inode is deleted */ - brelse(bh); ret = -ESTALE; goto bad_inode; } @@ -4848,11 +4861,35 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) ei->i_data[block] = raw_inode->i_block[block]; INIT_LIST_HEAD(&ei->i_orphan); + /* + * Set transaction id's of transactions that have to be committed + * to finish f[data]sync. We set them to currently running transaction + * as we cannot be sure that the inode or some of its metadata isn't + * part of the transaction - the inode could have been reclaimed and + * now it is reread from disk. + */ + if (journal) { + transaction_t *transaction; + tid_t tid; + + spin_lock(&journal->j_state_lock); + if (journal->j_running_transaction) + transaction = journal->j_running_transaction; + else + transaction = journal->j_committing_transaction; + if (transaction) + tid = transaction->t_tid; + else + tid = journal->j_commit_sequence; + spin_unlock(&journal->j_state_lock); + ei->i_sync_tid = tid; + ei->i_datasync_tid = tid; + } + if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE) { ei->i_extra_isize = le16_to_cpu(raw_inode->i_extra_isize); if (EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize > EXT4_INODE_SIZE(inode->i_sb)) { - brelse(bh); ret = -EIO; goto bad_inode; } @@ -4884,10 +4921,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) ret = 0; if (ei->i_file_acl && - ((ei->i_file_acl < - (le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block) + - EXT4_SB(sb)->s_gdb_count)) || - (ei->i_file_acl >= ext4_blocks_count(EXT4_SB(sb)->s_es)))) { + !ext4_data_block_valid(EXT4_SB(sb), ei->i_file_acl, 1)) { ext4_error(sb, __func__, "bad extended attribute block %llu in inode #%lu", ei->i_file_acl, inode->i_ino); @@ -4905,10 +4939,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) /* Validate block references which are part of inode */ ret = ext4_check_inode_blockref(inode); } - if (ret) { - brelse(bh); + if (ret) goto bad_inode; - } if (S_ISREG(inode->i_mode)) { inode->i_op = &ext4_file_inode_operations; @@ -4936,7 +4968,6 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) init_special_inode(inode, inode->i_mode, new_decode_dev(le32_to_cpu(raw_inode->i_block[1]))); } else { - brelse(bh); ret = -EIO; ext4_error(inode->i_sb, __func__, "bogus i_mode (%o) for inode=%lu", @@ -4949,6 +4980,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) return inode; bad_inode: + brelse(iloc.bh); iget_failed(inode); return ERR_PTR(ret); } @@ -5108,6 +5140,7 @@ static int ext4_do_update_inode(handle_t *handle, err = rc; ei->i_state &= ~EXT4_STATE_NEW; + ext4_update_inode_fsync_trans(handle, inode, 0); out_brelse: brelse(bh); ext4_std_error(inode->i_sb, err); @@ -5227,8 +5260,8 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr) /* (user+group)*(old+new) structure, inode write (sb, * inode block, ? - but truncate inode update has it) */ - handle = ext4_journal_start(inode, 2*(EXT4_QUOTA_INIT_BLOCKS(inode->i_sb)+ - EXT4_QUOTA_DEL_BLOCKS(inode->i_sb))+3); + handle = ext4_journal_start(inode, (EXT4_MAXQUOTAS_INIT_BLOCKS(inode->i_sb)+ + EXT4_MAXQUOTAS_DEL_BLOCKS(inode->i_sb))+3); if (IS_ERR(handle)) { error = PTR_ERR(handle); goto err_out; diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index c1cdf61..b63d193 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -221,31 +221,38 @@ setversion_out: struct file *donor_filp; int err; + if (!(filp->f_mode & FMODE_READ) || + !(filp->f_mode & FMODE_WRITE)) + return -EBADF; + if (copy_from_user(&me, (struct move_extent __user *)arg, sizeof(me))) return -EFAULT; + me.moved_len = 0; donor_filp = fget(me.donor_fd); if (!donor_filp) return -EBADF; - if (!capable(CAP_DAC_OVERRIDE)) { - if ((current->real_cred->fsuid != inode->i_uid) || - !(inode->i_mode & S_IRUSR) || - !(donor_filp->f_dentry->d_inode->i_mode & - S_IRUSR)) { - fput(donor_filp); - return -EACCES; - } + if (!(donor_filp->f_mode & FMODE_WRITE)) { + err = -EBADF; + goto mext_out; } + err = mnt_want_write(filp->f_path.mnt); + if (err) + goto mext_out; + err = ext4_move_extents(filp, donor_filp, me.orig_start, me.donor_start, me.len, &me.moved_len); - fput(donor_filp); + mnt_drop_write(filp->f_path.mnt); + if (me.moved_len > 0) + file_remove_suid(donor_filp); if (copy_to_user((struct move_extent *)arg, &me, sizeof(me))) - return -EFAULT; - + err = -EFAULT; +mext_out: + fput(donor_filp); return err; } diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index bba1282..7d71148 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2529,7 +2529,6 @@ static void release_blocks_on_commit(journal_t *journal, transaction_t *txn) struct ext4_group_info *db; int err, count = 0, count2 = 0; struct ext4_free_data *entry; - ext4_fsblk_t discard_block; struct list_head *l, *ltmp; list_for_each_safe(l, ltmp, &txn->t_private_list) { @@ -2559,13 +2558,19 @@ static void release_blocks_on_commit(journal_t *journal, transaction_t *txn) page_cache_release(e4b.bd_bitmap_page); } ext4_unlock_group(sb, entry->group); - discard_block = (ext4_fsblk_t) entry->group * EXT4_BLOCKS_PER_GROUP(sb) - + entry->start_blk - + le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block); - trace_ext4_discard_blocks(sb, (unsigned long long)discard_block, - entry->count); - sb_issue_discard(sb, discard_block, entry->count); - + if (test_opt(sb, DISCARD)) { + ext4_fsblk_t discard_block; + struct ext4_super_block *es = EXT4_SB(sb)->s_es; + + discard_block = (ext4_fsblk_t)entry->group * + EXT4_BLOCKS_PER_GROUP(sb) + + entry->start_blk + + le32_to_cpu(es->s_first_data_block); + trace_ext4_discard_blocks(sb, + (unsigned long long)discard_block, + entry->count); + sb_issue_discard(sb, discard_block, entry->count); + } kmem_cache_free(ext4_free_ext_cachep, entry); ext4_mb_release_desc(&e4b); } @@ -3006,6 +3011,24 @@ static void ext4_mb_collect_stats(struct ext4_allocation_context *ac) } /* + * Called on failure; free up any blocks from the inode PA for this + * context. We don't need this for MB_GROUP_PA because we only change + * pa_free in ext4_mb_release_context(), but on failure, we've already + * zeroed out ac->ac_b_ex.fe_len, so group_pa->pa_free is not changed. + */ +static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac) +{ + struct ext4_prealloc_space *pa = ac->ac_pa; + int len; + + if (pa && pa->pa_type == MB_INODE_PA) { + len = ac->ac_b_ex.fe_len; + pa->pa_free += len; + } + +} + +/* * use blocks preallocated to inode */ static void ext4_mb_use_inode_pa(struct ext4_allocation_context *ac, @@ -4290,6 +4313,7 @@ repeat: ac->ac_status = AC_STATUS_CONTINUE; goto repeat; } else if (*errp) { + ext4_discard_allocated_blocks(ac); ac->ac_b_ex.fe_len = 0; ar->len = 0; ext4_mb_show_ac(ac); diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c index a93d5b8..8646149 100644 --- a/fs/ext4/migrate.c +++ b/fs/ext4/migrate.c @@ -238,7 +238,7 @@ static int extend_credit_for_blkdel(handle_t *handle, struct inode *inode) * So allocate a credit of 3. We may update * quota (user and group). */ - needed = 3 + 2*EXT4_QUOTA_TRANS_BLOCKS(inode->i_sb); + needed = 3 + EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb); if (ext4_journal_extend(handle, needed) != 0) retval = ext4_journal_restart(handle, needed); @@ -477,7 +477,7 @@ int ext4_ext_migrate(struct inode *inode) handle = ext4_journal_start(inode, EXT4_DATA_TRANS_BLOCKS(inode->i_sb) + EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 + - 2 * EXT4_QUOTA_INIT_BLOCKS(inode->i_sb) + EXT4_MAXQUOTAS_INIT_BLOCKS(inode->i_sb) + 1); if (IS_ERR(handle)) { retval = PTR_ERR(handle); diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index 25b6b14..f5b03a1 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -77,12 +77,14 @@ static int mext_next_extent(struct inode *inode, struct ext4_ext_path *path, struct ext4_extent **extent) { + struct ext4_extent_header *eh; int ppos, leaf_ppos = path->p_depth; ppos = leaf_ppos; if (EXT_LAST_EXTENT(path[ppos].p_hdr) > path[ppos].p_ext) { /* leaf block */ *extent = ++path[ppos].p_ext; + path[ppos].p_block = ext_pblock(path[ppos].p_ext); return 0; } @@ -119,9 +121,18 @@ mext_next_extent(struct inode *inode, struct ext4_ext_path *path, ext_block_hdr(path[cur_ppos+1].p_bh); } + path[leaf_ppos].p_ext = *extent = NULL; + + eh = path[leaf_ppos].p_hdr; + if (le16_to_cpu(eh->eh_entries) == 0) + /* empty leaf is found */ + return -ENODATA; + /* leaf block */ path[leaf_ppos].p_ext = *extent = EXT_FIRST_EXTENT(path[leaf_ppos].p_hdr); + path[leaf_ppos].p_block = + ext_pblock(path[leaf_ppos].p_ext); return 0; } } @@ -155,40 +166,15 @@ mext_check_null_inode(struct inode *inode1, struct inode *inode2, } /** - * mext_double_down_read - Acquire two inodes' read semaphore - * - * @orig_inode: original inode structure - * @donor_inode: donor inode structure - * Acquire read semaphore of the two inodes (orig and donor) by i_ino order. - */ -static void -mext_double_down_read(struct inode *orig_inode, struct inode *donor_inode) -{ - struct inode *first = orig_inode, *second = donor_inode; - - /* - * Use the inode number to provide the stable locking order instead - * of its address, because the C language doesn't guarantee you can - * compare pointers that don't come from the same array. - */ - if (donor_inode->i_ino < orig_inode->i_ino) { - first = donor_inode; - second = orig_inode; - } - - down_read(&EXT4_I(first)->i_data_sem); - down_read(&EXT4_I(second)->i_data_sem); -} - -/** - * mext_double_down_write - Acquire two inodes' write semaphore + * double_down_write_data_sem - Acquire two inodes' write lock of i_data_sem * * @orig_inode: original inode structure * @donor_inode: donor inode structure - * Acquire write semaphore of the two inodes (orig and donor) by i_ino order. + * Acquire write lock of i_data_sem of the two inodes (orig and donor) by + * i_ino order. */ static void -mext_double_down_write(struct inode *orig_inode, struct inode *donor_inode) +double_down_write_data_sem(struct inode *orig_inode, struct inode *donor_inode) { struct inode *first = orig_inode, *second = donor_inode; @@ -203,32 +189,18 @@ mext_double_down_write(struct inode *orig_inode, struct inode *donor_inode) } down_write(&EXT4_I(first)->i_data_sem); - down_write(&EXT4_I(second)->i_data_sem); + down_write_nested(&EXT4_I(second)->i_data_sem, SINGLE_DEPTH_NESTING); } /** - * mext_double_up_read - Release two inodes' read semaphore + * double_up_write_data_sem - Release two inodes' write lock of i_data_sem * * @orig_inode: original inode structure to be released its lock first * @donor_inode: donor inode structure to be released its lock second - * Release read semaphore of two inodes (orig and donor). + * Release write lock of i_data_sem of two inodes (orig and donor). */ static void -mext_double_up_read(struct inode *orig_inode, struct inode *donor_inode) -{ - up_read(&EXT4_I(orig_inode)->i_data_sem); - up_read(&EXT4_I(donor_inode)->i_data_sem); -} - -/** - * mext_double_up_write - Release two inodes' write semaphore - * - * @orig_inode: original inode structure to be released its lock first - * @donor_inode: donor inode structure to be released its lock second - * Release write semaphore of two inodes (orig and donor). - */ -static void -mext_double_up_write(struct inode *orig_inode, struct inode *donor_inode) +double_up_write_data_sem(struct inode *orig_inode, struct inode *donor_inode) { up_write(&EXT4_I(orig_inode)->i_data_sem); up_write(&EXT4_I(donor_inode)->i_data_sem); @@ -661,6 +633,7 @@ mext_calc_swap_extents(struct ext4_extent *tmp_dext, * @donor_inode: donor inode * @from: block offset of orig_inode * @count: block count to be replaced + * @err: pointer to save return value * * Replace original inode extents and donor inode extents page by page. * We implement this replacement in the following three steps: @@ -671,33 +644,33 @@ mext_calc_swap_extents(struct ext4_extent *tmp_dext, * 3. Change the block information of donor inode to point at the saved * original inode blocks in the dummy extents. * - * Return 0 on success, or a negative error value on failure. + * Return replaced block count. */ static int mext_replace_branches(handle_t *handle, struct inode *orig_inode, struct inode *donor_inode, ext4_lblk_t from, - ext4_lblk_t count) + ext4_lblk_t count, int *err) { struct ext4_ext_path *orig_path = NULL; struct ext4_ext_path *donor_path = NULL; struct ext4_extent *oext, *dext; struct ext4_extent tmp_dext, tmp_oext; ext4_lblk_t orig_off = from, donor_off = from; - int err = 0; int depth; int replaced_count = 0; int dext_alen; - mext_double_down_write(orig_inode, donor_inode); + /* Protect extent trees against block allocations via delalloc */ + double_down_write_data_sem(orig_inode, donor_inode); /* Get the original extent for the block "orig_off" */ - err = get_ext_path(orig_inode, orig_off, &orig_path); - if (err) + *err = get_ext_path(orig_inode, orig_off, &orig_path); + if (*err) goto out; /* Get the donor extent for the head */ - err = get_ext_path(donor_inode, donor_off, &donor_path); - if (err) + *err = get_ext_path(donor_inode, donor_off, &donor_path); + if (*err) goto out; depth = ext_depth(orig_inode); oext = orig_path[depth].p_ext; @@ -707,9 +680,9 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode, dext = donor_path[depth].p_ext; tmp_dext = *dext; - err = mext_calc_swap_extents(&tmp_dext, &tmp_oext, orig_off, + *err = mext_calc_swap_extents(&tmp_dext, &tmp_oext, orig_off, donor_off, count); - if (err) + if (*err) goto out; /* Loop for the donor extents */ @@ -718,7 +691,7 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode, if (!dext) { ext4_error(donor_inode->i_sb, __func__, "The extent for donor must be found"); - err = -EIO; + *err = -EIO; goto out; } else if (donor_off != le32_to_cpu(tmp_dext.ee_block)) { ext4_error(donor_inode->i_sb, __func__, @@ -726,20 +699,20 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode, "extent(%u) should be equal", donor_off, le32_to_cpu(tmp_dext.ee_block)); - err = -EIO; + *err = -EIO; goto out; } /* Set donor extent to orig extent */ - err = mext_leaf_block(handle, orig_inode, + *err = mext_leaf_block(handle, orig_inode, orig_path, &tmp_dext, &orig_off); - if (err < 0) + if (*err) goto out; /* Set orig extent to donor extent */ - err = mext_leaf_block(handle, donor_inode, + *err = mext_leaf_block(handle, donor_inode, donor_path, &tmp_oext, &donor_off); - if (err < 0) + if (*err) goto out; dext_alen = ext4_ext_get_actual_len(&tmp_dext); @@ -753,35 +726,25 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode, if (orig_path) ext4_ext_drop_refs(orig_path); - err = get_ext_path(orig_inode, orig_off, &orig_path); - if (err) + *err = get_ext_path(orig_inode, orig_off, &orig_path); + if (*err) goto out; depth = ext_depth(orig_inode); oext = orig_path[depth].p_ext; - if (le32_to_cpu(oext->ee_block) + - ext4_ext_get_actual_len(oext) <= orig_off) { - err = 0; - goto out; - } tmp_oext = *oext; if (donor_path) ext4_ext_drop_refs(donor_path); - err = get_ext_path(donor_inode, donor_off, &donor_path); - if (err) + *err = get_ext_path(donor_inode, donor_off, &donor_path); + if (*err) goto out; depth = ext_depth(donor_inode); dext = donor_path[depth].p_ext; - if (le32_to_cpu(dext->ee_block) + - ext4_ext_get_actual_len(dext) <= donor_off) { - err = 0; - goto out; - } tmp_dext = *dext; - err = mext_calc_swap_extents(&tmp_dext, &tmp_oext, orig_off, + *err = mext_calc_swap_extents(&tmp_dext, &tmp_oext, orig_off, donor_off, count - replaced_count); - if (err) + if (*err) goto out; } @@ -795,8 +758,12 @@ out: kfree(donor_path); } - mext_double_up_write(orig_inode, donor_inode); - return err; + ext4_ext_invalidate_cache(orig_inode); + ext4_ext_invalidate_cache(donor_inode); + + double_up_write_data_sem(orig_inode, donor_inode); + + return replaced_count; } /** @@ -808,16 +775,17 @@ out: * @data_offset_in_page: block index where data swapping starts * @block_len_in_page: the number of blocks to be swapped * @uninit: orig extent is uninitialized or not + * @err: pointer to save return value * * Save the data in original inode blocks and replace original inode extents * with donor inode extents by calling mext_replace_branches(). - * Finally, write out the saved data in new original inode blocks. Return 0 - * on success, or a negative error value on failure. + * Finally, write out the saved data in new original inode blocks. Return + * replaced block count. */ static int move_extent_per_page(struct file *o_filp, struct inode *donor_inode, pgoff_t orig_page_offset, int data_offset_in_page, - int block_len_in_page, int uninit) + int block_len_in_page, int uninit, int *err) { struct inode *orig_inode = o_filp->f_dentry->d_inode; struct address_space *mapping = orig_inode->i_mapping; @@ -829,9 +797,11 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, long long offs = orig_page_offset << PAGE_CACHE_SHIFT; unsigned long blocksize = orig_inode->i_sb->s_blocksize; unsigned int w_flags = 0; - unsigned int tmp_data_len, data_len; + unsigned int tmp_data_size, data_size, replaced_size; void *fsdata; - int ret, i, jblocks; + int i, jblocks; + int err2 = 0; + int replaced_count = 0; int blocks_per_page = PAGE_CACHE_SIZE >> orig_inode->i_blkbits; /* @@ -841,8 +811,8 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, jblocks = ext4_writepage_trans_blocks(orig_inode) * 2; handle = ext4_journal_start(orig_inode, jblocks); if (IS_ERR(handle)) { - ret = PTR_ERR(handle); - return ret; + *err = PTR_ERR(handle); + return 0; } if (segment_eq(get_fs(), KERNEL_DS)) @@ -858,39 +828,36 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, * Just swap data blocks between orig and donor. */ if (uninit) { - ret = mext_replace_branches(handle, orig_inode, - donor_inode, orig_blk_offset, - block_len_in_page); - - /* Clear the inode cache not to refer to the old data */ - ext4_ext_invalidate_cache(orig_inode); - ext4_ext_invalidate_cache(donor_inode); + replaced_count = mext_replace_branches(handle, orig_inode, + donor_inode, orig_blk_offset, + block_len_in_page, err); goto out2; } offs = (long long)orig_blk_offset << orig_inode->i_blkbits; - /* Calculate data_len */ + /* Calculate data_size */ if ((orig_blk_offset + block_len_in_page - 1) == ((orig_inode->i_size - 1) >> orig_inode->i_blkbits)) { /* Replace the last block */ - tmp_data_len = orig_inode->i_size & (blocksize - 1); + tmp_data_size = orig_inode->i_size & (blocksize - 1); /* - * If data_len equal zero, it shows data_len is multiples of + * If data_size equal zero, it shows data_size is multiples of * blocksize. So we set appropriate value. */ - if (tmp_data_len == 0) - tmp_data_len = blocksize; + if (tmp_data_size == 0) + tmp_data_size = blocksize; - data_len = tmp_data_len + + data_size = tmp_data_size + ((block_len_in_page - 1) << orig_inode->i_blkbits); - } else { - data_len = block_len_in_page << orig_inode->i_blkbits; - } + } else + data_size = block_len_in_page << orig_inode->i_blkbits; + + replaced_size = data_size; - ret = a_ops->write_begin(o_filp, mapping, offs, data_len, w_flags, + *err = a_ops->write_begin(o_filp, mapping, offs, data_size, w_flags, &page, &fsdata); - if (unlikely(ret < 0)) + if (unlikely(*err < 0)) goto out; if (!PageUptodate(page)) { @@ -911,14 +878,17 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, /* Release old bh and drop refs */ try_to_release_page(page, 0); - ret = mext_replace_branches(handle, orig_inode, donor_inode, - orig_blk_offset, block_len_in_page); - if (ret < 0) - goto out; - - /* Clear the inode cache not to refer to the old data */ - ext4_ext_invalidate_cache(orig_inode); - ext4_ext_invalidate_cache(donor_inode); + replaced_count = mext_replace_branches(handle, orig_inode, donor_inode, + orig_blk_offset, block_len_in_page, + &err2); + if (err2) { + if (replaced_count) { + block_len_in_page = replaced_count; + replaced_size = + block_len_in_page << orig_inode->i_blkbits; + } else + goto out; + } if (!page_has_buffers(page)) create_empty_buffers(page, 1 << orig_inode->i_blkbits, 0); @@ -928,16 +898,16 @@ move_extent_per_page(struct file *o_filp, struct inode *donor_inode, bh = bh->b_this_page; for (i = 0; i < block_len_in_page; i++) { - ret = ext4_get_block(orig_inode, + *err = ext4_get_block(orig_inode, (sector_t)(orig_blk_offset + i), bh, 0); - if (ret < 0) + if (*err < 0) goto out; if (bh->b_this_page != NULL) bh = bh->b_this_page; } - ret = a_ops->write_end(o_filp, mapping, offs, data_len, data_len, + *err = a_ops->write_end(o_filp, mapping, offs, data_size, replaced_size, page, fsdata); page = NULL; @@ -951,7 +921,10 @@ out: out2: ext4_journal_stop(handle); - return ret < 0 ? ret : 0; + if (err2) + *err = err2; + + return replaced_count; } /** @@ -962,7 +935,6 @@ out2: * @orig_start: logical start offset in block for orig * @donor_start: logical start offset in block for donor * @len: the number of blocks to be moved - * @moved_len: moved block length * * Check the arguments of ext4_move_extents() whether the files can be * exchanged with each other. @@ -970,8 +942,8 @@ out2: */ static int mext_check_arguments(struct inode *orig_inode, - struct inode *donor_inode, __u64 orig_start, - __u64 donor_start, __u64 *len, __u64 moved_len) + struct inode *donor_inode, __u64 orig_start, + __u64 donor_start, __u64 *len) { ext4_lblk_t orig_blocks, donor_blocks; unsigned int blkbits = orig_inode->i_blkbits; @@ -985,6 +957,13 @@ mext_check_arguments(struct inode *orig_inode, return -EINVAL; } + if (donor_inode->i_mode & (S_ISUID|S_ISGID)) { + ext4_debug("ext4 move extent: suid or sgid is set" + " to donor file [ino:orig %lu, donor %lu]\n", + orig_inode->i_ino, donor_inode->i_ino); + return -EINVAL; + } + /* Ext4 move extent does not support swapfile */ if (IS_SWAPFILE(orig_inode) || IS_SWAPFILE(donor_inode)) { ext4_debug("ext4 move extent: The argument files should " @@ -1025,13 +1004,6 @@ mext_check_arguments(struct inode *orig_inode, return -EINVAL; } - if (moved_len) { - ext4_debug("ext4 move extent: moved_len should be 0 " - "[ino:orig %lu, donor %lu]\n", orig_inode->i_ino, - donor_inode->i_ino); - return -EINVAL; - } - if ((orig_start > EXT_MAX_BLOCK) || (donor_start > EXT_MAX_BLOCK) || (*len > EXT_MAX_BLOCK) || @@ -1232,16 +1204,16 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, return -EINVAL; } - /* protect orig and donor against a truncate */ + /* Protect orig and donor inodes against a truncate */ ret1 = mext_inode_double_lock(orig_inode, donor_inode); if (ret1 < 0) return ret1; - mext_double_down_read(orig_inode, donor_inode); + /* Protect extent tree against block allocations via delalloc */ + double_down_write_data_sem(orig_inode, donor_inode); /* Check the filesystem environment whether move_extent can be done */ ret1 = mext_check_arguments(orig_inode, donor_inode, orig_start, - donor_start, &len, *moved_len); - mext_double_up_read(orig_inode, donor_inode); + donor_start, &len); if (ret1) goto out; @@ -1355,36 +1327,39 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, seq_start = le32_to_cpu(ext_cur->ee_block); rest_blocks = seq_blocks; - /* Discard preallocations of two inodes */ - down_write(&EXT4_I(orig_inode)->i_data_sem); - ext4_discard_preallocations(orig_inode); - up_write(&EXT4_I(orig_inode)->i_data_sem); - - down_write(&EXT4_I(donor_inode)->i_data_sem); - ext4_discard_preallocations(donor_inode); - up_write(&EXT4_I(donor_inode)->i_data_sem); + /* + * Up semaphore to avoid following problems: + * a. transaction deadlock among ext4_journal_start, + * ->write_begin via pagefault, and jbd2_journal_commit + * b. racing with ->readpage, ->write_begin, and ext4_get_block + * in move_extent_per_page + */ + double_up_write_data_sem(orig_inode, donor_inode); while (orig_page_offset <= seq_end_page) { /* Swap original branches with new branches */ - ret1 = move_extent_per_page(o_filp, donor_inode, + block_len_in_page = move_extent_per_page( + o_filp, donor_inode, orig_page_offset, data_offset_in_page, - block_len_in_page, uninit); - if (ret1 < 0) - goto out; - orig_page_offset++; + block_len_in_page, uninit, + &ret1); + /* Count how many blocks we have exchanged */ *moved_len += block_len_in_page; + if (ret1 < 0) + break; if (*moved_len > len) { ext4_error(orig_inode->i_sb, __func__, "We replaced blocks too much! " "sum of replaced: %llu requested: %llu", *moved_len, len); ret1 = -EIO; - goto out; + break; } + orig_page_offset++; data_offset_in_page = 0; rest_blocks -= block_len_in_page; if (rest_blocks > blocks_per_page) @@ -1393,6 +1368,10 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, block_len_in_page = rest_blocks; } + double_down_write_data_sem(orig_inode, donor_inode); + if (ret1 < 0) + break; + /* Decrease buffer counter */ if (holecheck_path) ext4_ext_drop_refs(holecheck_path); @@ -1414,6 +1393,11 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, } out: + if (*moved_len) { + ext4_discard_preallocations(orig_inode); + ext4_discard_preallocations(donor_inode); + } + if (orig_path) { ext4_ext_drop_refs(orig_path); kfree(orig_path); @@ -1422,7 +1406,7 @@ out: ext4_ext_drop_refs(holecheck_path); kfree(holecheck_path); } - + double_up_write_data_sem(orig_inode, donor_inode); ret2 = mext_inode_double_unlock(orig_inode, donor_inode); if (ret1) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 6d2c1b8..17a17e1 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1292,9 +1292,6 @@ errout: * add_dirent_to_buf will attempt search the directory block for * space. It will return -ENOSPC if no space is available, and -EIO * and -EEXIST if directory entry already exists. - * - * NOTE! bh is NOT released in the case where ENOSPC is returned. In - * all other cases bh is released. */ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry, struct inode *inode, struct ext4_dir_entry_2 *de, @@ -1315,14 +1312,10 @@ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry, top = bh->b_data + blocksize - reclen; while ((char *) de <= top) { if (!ext4_check_dir_entry("ext4_add_entry", dir, de, - bh, offset)) { - brelse(bh); + bh, offset)) return -EIO; - } - if (ext4_match(namelen, name, de)) { - brelse(bh); + if (ext4_match(namelen, name, de)) return -EEXIST; - } nlen = EXT4_DIR_REC_LEN(de->name_len); rlen = ext4_rec_len_from_disk(de->rec_len, blocksize); if ((de->inode? rlen - nlen: rlen) >= reclen) @@ -1337,7 +1330,6 @@ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry, err = ext4_journal_get_write_access(handle, bh); if (err) { ext4_std_error(dir->i_sb, err); - brelse(bh); return err; } @@ -1377,7 +1369,6 @@ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry, err = ext4_handle_dirty_metadata(handle, dir, bh); if (err) ext4_std_error(dir->i_sb, err); - brelse(bh); return 0; } @@ -1471,7 +1462,9 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry, if (!(de)) return retval; - return add_dirent_to_buf(handle, dentry, inode, de, bh); + retval = add_dirent_to_buf(handle, dentry, inode, de, bh); + brelse(bh); + return retval; } /* @@ -1514,8 +1507,10 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry, if(!bh) return retval; retval = add_dirent_to_buf(handle, dentry, inode, NULL, bh); - if (retval != -ENOSPC) + if (retval != -ENOSPC) { + brelse(bh); return retval; + } if (blocks == 1 && !dx_fallback && EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_DIR_INDEX)) @@ -1528,7 +1523,9 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry, de = (struct ext4_dir_entry_2 *) bh->b_data; de->inode = 0; de->rec_len = ext4_rec_len_to_disk(blocksize, blocksize); - return add_dirent_to_buf(handle, dentry, inode, de, bh); + retval = add_dirent_to_buf(handle, dentry, inode, de, bh); + brelse(bh); + return retval; } /* @@ -1561,10 +1558,8 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry, goto journal_error; err = add_dirent_to_buf(handle, dentry, inode, NULL, bh); - if (err != -ENOSPC) { - bh = NULL; + if (err != -ENOSPC) goto cleanup; - } /* Block full, should compress but for now just split */ dxtrace(printk(KERN_DEBUG "using %u of %u node entries\n", @@ -1657,7 +1652,6 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry, if (!de) goto cleanup; err = add_dirent_to_buf(handle, dentry, inode, de, bh); - bh = NULL; goto cleanup; journal_error: @@ -1775,7 +1769,7 @@ static int ext4_create(struct inode *dir, struct dentry *dentry, int mode, retry: handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) + EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 + - 2*EXT4_QUOTA_INIT_BLOCKS(dir->i_sb)); + EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb)); if (IS_ERR(handle)) return PTR_ERR(handle); @@ -1809,7 +1803,7 @@ static int ext4_mknod(struct inode *dir, struct dentry *dentry, retry: handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) + EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 + - 2*EXT4_QUOTA_INIT_BLOCKS(dir->i_sb)); + EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb)); if (IS_ERR(handle)) return PTR_ERR(handle); @@ -1846,7 +1840,7 @@ static int ext4_mkdir(struct inode *dir, struct dentry *dentry, int mode) retry: handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) + EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 + - 2*EXT4_QUOTA_INIT_BLOCKS(dir->i_sb)); + EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb)); if (IS_ERR(handle)) return PTR_ERR(handle); @@ -2259,7 +2253,7 @@ static int ext4_symlink(struct inode *dir, retry: handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) + EXT4_INDEX_EXTRA_TRANS_BLOCKS + 5 + - 2*EXT4_QUOTA_INIT_BLOCKS(dir->i_sb)); + EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb)); if (IS_ERR(handle)) return PTR_ERR(handle); diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index 3cfc343..3b2c554 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -247,7 +247,7 @@ static int setup_new_group_blocks(struct super_block *sb, goto exit_bh; if (IS_ERR(gdb = bclean(handle, sb, block))) { - err = PTR_ERR(bh); + err = PTR_ERR(gdb); goto exit_bh; } ext4_handle_dirty_metadata(handle, NULL, gdb); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index d4ca92a..9ae5217 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -603,10 +603,6 @@ static void ext4_put_super(struct super_block *sb) if (sb->s_dirt) ext4_commit_super(sb, 1); - ext4_release_system_zone(sb); - ext4_mb_release(sb); - ext4_ext_release(sb); - ext4_xattr_put_super(sb); if (sbi->s_journal) { err = jbd2_journal_destroy(sbi->s_journal); sbi->s_journal = NULL; @@ -614,6 +610,12 @@ static void ext4_put_super(struct super_block *sb) ext4_abort(sb, __func__, "Couldn't clean up the journal"); } + + ext4_release_system_zone(sb); + ext4_mb_release(sb); + ext4_ext_release(sb); + ext4_xattr_put_super(sb); + if (!(sb->s_flags & MS_RDONLY)) { EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER); es->s_state = cpu_to_le16(sbi->s_mount_state); @@ -704,6 +706,8 @@ static struct inode *ext4_alloc_inode(struct super_block *sb) spin_lock_init(&(ei->i_block_reservation_lock)); INIT_LIST_HEAD(&ei->i_aio_dio_complete_list); ei->cur_aio_dio = NULL; + ei->i_sync_tid = 0; + ei->i_datasync_tid = 0; return &ei->vfs_inode; } @@ -899,6 +903,12 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) if (test_opt(sb, NO_AUTO_DA_ALLOC)) seq_puts(seq, ",noauto_da_alloc"); + if (test_opt(sb, DISCARD)) + seq_puts(seq, ",discard"); + + if (test_opt(sb, NOLOAD)) + seq_puts(seq, ",norecovery"); + ext4_show_quota_options(seq, sb); return 0; @@ -1079,7 +1089,8 @@ enum { Opt_usrquota, Opt_grpquota, Opt_i_version, Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_block_validity, Opt_noblock_validity, - Opt_inode_readahead_blks, Opt_journal_ioprio + Opt_inode_readahead_blks, Opt_journal_ioprio, + Opt_discard, Opt_nodiscard, }; static const match_table_t tokens = { @@ -1104,6 +1115,7 @@ static const match_table_t tokens = { {Opt_acl, "acl"}, {Opt_noacl, "noacl"}, {Opt_noload, "noload"}, + {Opt_noload, "norecovery"}, {Opt_nobh, "nobh"}, {Opt_bh, "bh"}, {Opt_commit, "commit=%u"}, @@ -1144,6 +1156,8 @@ static const match_table_t tokens = { {Opt_auto_da_alloc, "auto_da_alloc=%u"}, {Opt_auto_da_alloc, "auto_da_alloc"}, {Opt_noauto_da_alloc, "noauto_da_alloc"}, + {Opt_discard, "discard"}, + {Opt_nodiscard, "nodiscard"}, {Opt_err, NULL}, }; @@ -1565,6 +1579,12 @@ set_qf_format: else set_opt(sbi->s_mount_opt,NO_AUTO_DA_ALLOC); break; + case Opt_discard: + set_opt(sbi->s_mount_opt, DISCARD); + break; + case Opt_nodiscard: + clear_opt(sbi->s_mount_opt, DISCARD); + break; default: ext4_msg(sb, KERN_ERR, "Unrecognized mount option \"%s\" " @@ -1673,14 +1693,14 @@ static int ext4_fill_flex_info(struct super_block *sb) size_t size; int i; - if (!sbi->s_es->s_log_groups_per_flex) { + sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex; + groups_per_flex = 1 << sbi->s_log_groups_per_flex; + + if (groups_per_flex < 2) { sbi->s_log_groups_per_flex = 0; return 1; } - sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex; - groups_per_flex = 1 << sbi->s_log_groups_per_flex; - /* We allocate both existing and potentially added groups */ flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) + ((le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) + 1) << @@ -3668,13 +3688,11 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_blocks = ext4_blocks_count(es) - sbi->s_overhead_last; buf->f_bfree = percpu_counter_sum_positive(&sbi->s_freeblocks_counter) - percpu_counter_sum_positive(&sbi->s_dirtyblocks_counter); - ext4_free_blocks_count_set(es, buf->f_bfree); buf->f_bavail = buf->f_bfree - ext4_r_blocks_count(es); if (buf->f_bfree < ext4_r_blocks_count(es)) buf->f_bavail = 0; buf->f_files = le32_to_cpu(es->s_inodes_count); buf->f_ffree = percpu_counter_sum_positive(&sbi->s_freeinodes_counter); - es->s_free_inodes_count = cpu_to_le32(buf->f_ffree); buf->f_namelen = EXT4_NAME_LEN; fsid = le64_to_cpup((void *)es->s_uuid) ^ le64_to_cpup((void *)es->s_uuid + sizeof(u64)); diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index fed5b01..0257019 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -988,6 +988,10 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, if (error) goto cleanup; + error = ext4_journal_get_write_access(handle, is.iloc.bh); + if (error) + goto cleanup; + if (EXT4_I(inode)->i_state & EXT4_STATE_NEW) { struct ext4_inode *raw_inode = ext4_raw_inode(&is.iloc); memset(raw_inode, 0, EXT4_SB(inode->i_sb)->s_inode_size); @@ -1013,9 +1017,6 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, if (flags & XATTR_CREATE) goto cleanup; } - error = ext4_journal_get_write_access(handle, is.iloc.bh); - if (error) - goto cleanup; if (!value) { if (!is.s.not_found) error = ext4_xattr_ibody_set(handle, inode, &i, &is); diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index d4cfd6d..8896c1d 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -636,6 +636,10 @@ void jbd2_journal_commit_transaction(journal_t *journal) JBUFFER_TRACE(jh, "ph3: write metadata"); flags = jbd2_journal_write_metadata_buffer(commit_transaction, jh, &new_jh, blocknr); + if (flags < 0) { + jbd2_journal_abort(journal, flags); + continue; + } set_bit(BH_JWrite, &jh2bh(new_jh)->b_state); wbuf[bufs++] = jh2bh(new_jh); diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index fed8538..82c295d 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -78,6 +78,7 @@ EXPORT_SYMBOL(jbd2_journal_errno); EXPORT_SYMBOL(jbd2_journal_ack_err); EXPORT_SYMBOL(jbd2_journal_clear_err); EXPORT_SYMBOL(jbd2_log_wait_commit); +EXPORT_SYMBOL(jbd2_log_start_commit); EXPORT_SYMBOL(jbd2_journal_start_commit); EXPORT_SYMBOL(jbd2_journal_force_commit_nested); EXPORT_SYMBOL(jbd2_journal_wipe); @@ -358,6 +359,10 @@ repeat: jbd_unlock_bh_state(bh_in); tmp = jbd2_alloc(bh_in->b_size, GFP_NOFS); + if (!tmp) { + jbd2_journal_put_journal_head(new_jh); + return -ENOMEM; + } jbd_lock_bh_state(bh_in); if (jh_in->b_frozen_data) { jbd2_free(tmp, bh_in->b_size); diff --git a/include/linux/sched.h b/include/linux/sched.h index 75e6e60..0f67914 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2086,11 +2086,18 @@ static inline int is_si_special(const struct siginfo *info) return info <= SEND_SIG_FORCED; } -/* True if we are on the alternate signal stack. */ - +/* + * True if we are on the alternate signal stack. + */ static inline int on_sig_stack(unsigned long sp) { - return (sp - current->sas_ss_sp < current->sas_ss_size); +#ifdef CONFIG_STACK_GROWSUP + return sp >= current->sas_ss_sp && + sp - current->sas_ss_sp < current->sas_ss_size; +#else + return sp > current->sas_ss_sp && + sp - current->sas_ss_sp <= current->sas_ss_size; +#endif } static inline int sas_ss_flags(unsigned long sp) diff --git a/include/scsi/osd_protocol.h b/include/scsi/osd_protocol.h index 2cc8e8b..6856612 100644 --- a/include/scsi/osd_protocol.h +++ b/include/scsi/osd_protocol.h @@ -17,6 +17,7 @@ #define __OSD_PROTOCOL_H__ #include <linux/types.h> +#include <linux/kernel.h> #include <asm/unaligned.h> #include <scsi/scsi.h> diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 47941fc..0b4baba 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -677,6 +677,12 @@ struct Scsi_Host { void *shost_data; /* + * Points to the physical bus device we'd use to do DMA + * Needed just in case we have virtual hosts. + */ + struct device *dma_dev; + + /* * We should ensure that this is aligned, both for better performance * and also because some compilers (m68k) don't automatically force * alignment to a long boundary. @@ -720,7 +726,9 @@ extern int scsi_queue_work(struct Scsi_Host *, struct work_struct *); extern void scsi_flush_work(struct Scsi_Host *); extern struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *, int); -extern int __must_check scsi_add_host(struct Scsi_Host *, struct device *); +extern int __must_check scsi_add_host_with_dma(struct Scsi_Host *, + struct device *, + struct device *); extern void scsi_scan_host(struct Scsi_Host *); extern void scsi_rescan_device(struct device *); extern void scsi_remove_host(struct Scsi_Host *); @@ -731,6 +739,12 @@ extern const char *scsi_host_state_name(enum scsi_host_state); extern u64 scsi_calculate_bounce_limit(struct Scsi_Host *); +static inline int __must_check scsi_add_host(struct Scsi_Host *host, + struct device *dev) +{ + return scsi_add_host_with_dma(host, dev, dev); +} + static inline struct device *scsi_get_device(struct Scsi_Host *shost) { return shost->shost_gendev.parent;
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