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Subject[patch 3/5] fs: convert some simple filesystems
Date
Implement new aops for some of the simpler filesystems.

fs/configfs/inode.c | 4 ++--
fs/sysfs/inode.c | 4 ++--
mm/shmem.c | 16 ++++++++++------
3 files changed, 14 insertions(+), 10 deletions(-)
Index: linux-2.6/mm/shmem.c
===================================================================
--- linux-2.6.orig/mm/shmem.c
+++ linux-2.6/mm/shmem.c
@@ -1419,10 +1419,14 @@ static const struct inode_operations shm
* lets a tmpfs file be used read-write below the loop driver.
*/
static int
-shmem_prepare_write(struct file *file, struct page *page, unsigned offset, unsigned to)
-{
- struct inode *inode = page->mapping->host;
- return shmem_getpage(inode, page->index, &page, SGP_WRITE, NULL);
+shmem_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, int intr,
+ struct page **pagep, void **fsdata)
+{
+ struct inode *inode = mapping->host;
+ pgoff_t index = pos >> PAGE_CACHE_SHIFT;
+ *pagep = NULL;
+ return shmem_getpage(inode, index, pagep, SGP_WRITE, NULL);
}

static ssize_t
@@ -2319,8 +2323,8 @@ static const struct address_space_operat
.writepage = shmem_writepage,
.set_page_dirty = __set_page_dirty_no_writeback,
#ifdef CONFIG_TMPFS
- .prepare_write = shmem_prepare_write,
- .commit_write = simple_commit_write,
+ .write_begin = shmem_write_begin,
+ .write_end = simple_write_end,
#endif
.migratepage = migrate_page,
};
Index: linux-2.6/fs/configfs/inode.c
===================================================================
--- linux-2.6.orig/fs/configfs/inode.c
+++ linux-2.6/fs/configfs/inode.c
@@ -40,8 +40,8 @@ extern struct super_block * configfs_sb;

static const struct address_space_operations configfs_aops = {
.readpage = simple_readpage,
- .prepare_write = simple_prepare_write,
- .commit_write = simple_commit_write
+ .write_begin = simple_write_begin,
+ .write_end = simple_write_end,
};

static struct backing_dev_info configfs_backing_dev_info = {
Index: linux-2.6/fs/sysfs/inode.c
===================================================================
--- linux-2.6.orig/fs/sysfs/inode.c
+++ linux-2.6/fs/sysfs/inode.c
@@ -20,8 +20,8 @@ extern struct super_block * sysfs_sb;

static const struct address_space_operations sysfs_aops = {
.readpage = simple_readpage,
- .prepare_write = simple_prepare_write,
- .commit_write = simple_commit_write
+ .write_begin = simple_write_begin,
+ .write_end = simple_write_end,
};

static struct backing_dev_info sysfs_backing_dev_info = {
-
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