lkml.org 
[lkml]   [2006]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[RFC][Update][Patch 13/16] 48 bit on-disk i_file_acl support
From
Date
As we are planning to support 48-bit block numbers for ext3,
we need to support 48-bit block numbers for extended attributes.
In the short term, we can do this by reuse (on-disk) 16-bit
padding (linux2.i_pad1 currently used only by "hurd") as high
order bits for xattr. This patch basically does that.

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>


---

linux-2.6.17-ming/fs/ext3/inode.c | 8 ++++++++
linux-2.6.17-ming/include/linux/ext3_fs.h | 6 ++++--
2 files changed, 12 insertions(+), 2 deletions(-)

diff -puN fs/ext3/inode.c~ext3_48bit_i_file_acl fs/ext3/inode.c
--- linux-2.6.17/fs/ext3/inode.c~ext3_48bit_i_file_acl 2006-06-28 16:47:11.921203527 -0700
+++ linux-2.6.17-ming/fs/ext3/inode.c 2006-06-28 16:47:11.932202265 -0700
@@ -2641,6 +2641,10 @@ void ext3_read_inode(struct inode * inod
ei->i_frag_size = raw_inode->i_fsize;
#endif
ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl);
+ if ((sizeof(sector_t) > 4) &&
+ (EXT3_SB(inode->i_sb)->s_es->s_creator_os != EXT3_OS_HURD))
+ ei->i_file_acl |=
+ ((__u64)le16_to_cpu(raw_inode->i_file_acl_high)) << 32;
if (!S_ISREG(inode->i_mode)) {
ei->i_dir_acl = le32_to_cpu(raw_inode->i_dir_acl);
} else {
@@ -2774,6 +2778,10 @@ static int ext3_do_update_inode(handle_t
raw_inode->i_frag = ei->i_frag_no;
raw_inode->i_fsize = ei->i_frag_size;
#endif
+ if ((sizeof(sector_t) > 4) &&
+ (EXT3_SB(inode->i_sb)->s_es->s_creator_os != EXT3_OS_HURD))
+ raw_inode->i_file_acl_high =
+ cpu_to_le16((__u64)ei->i_file_acl >> 32);
raw_inode->i_file_acl = cpu_to_le32(ei->i_file_acl);
if (!S_ISREG(inode->i_mode)) {
raw_inode->i_dir_acl = cpu_to_le32(ei->i_dir_acl);
diff -puN include/linux/ext3_fs.h~ext3_48bit_i_file_acl include/linux/ext3_fs.h
--- linux-2.6.17/include/linux/ext3_fs.h~ext3_48bit_i_file_acl 2006-06-28 16:47:11.925203068 -0700
+++ linux-2.6.17-ming/include/linux/ext3_fs.h 2006-06-28 16:47:11.934202036 -0700
@@ -285,7 +285,7 @@ struct ext3_inode {
struct {
__u8 l_i_frag; /* Fragment number */
__u8 l_i_fsize; /* Fragment size */
- __u16 i_pad1;
+ __u16 l_i_file_acl_high;
__le16 l_i_uid_high; /* these 2 fields */
__le16 l_i_gid_high; /* were reserved2[0] */
__u32 l_i_reserved2;
@@ -301,7 +301,7 @@ struct ext3_inode {
struct {
__u8 m_i_frag; /* Fragment number */
__u8 m_i_fsize; /* Fragment size */
- __u16 m_pad1;
+ __u16 m_i_file_acl_high;
__u32 m_i_reserved2[2];
} masix2;
} osd2; /* OS dependent 2 */
@@ -315,6 +315,7 @@ struct ext3_inode {
#define i_reserved1 osd1.linux1.l_i_reserved1
#define i_frag osd2.linux2.l_i_frag
#define i_fsize osd2.linux2.l_i_fsize
+#define i_file_acl_high osd2.linux2.l_i_file_acl_high
#define i_uid_low i_uid
#define i_gid_low i_gid
#define i_uid_high osd2.linux2.l_i_uid_high
@@ -335,6 +336,7 @@ struct ext3_inode {
#define i_reserved1 osd1.masix1.m_i_reserved1
#define i_frag osd2.masix2.m_i_frag
#define i_fsize osd2.masix2.m_i_fsize
+#define i_file_acl_high osd2.masix2.m_i_file_acl_high
#define i_reserved2 osd2.masix2.m_i_reserved2

#endif /* defined(__KERNEL__) || defined(__linux__) */
_


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-06-30 02:23    [W:0.457 / U:30.632 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site