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384f3ced07
linux/fs
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Barry Naujok 384f3ced07 [XFS] Return case-insensitive match for dentry cache 
This implements the code to store the actual filename found during a
lookup in the dentry cache and to avoid multiple entries in the dcache
pointing to the same inode.

To avoid polluting the dcache, we implement a new directory inode
operations for lookup. xfs_vn_ci_lookup() stores the correct case name in
the dcache.

The "actual name" is only allocated and returned for a case- insensitive
match and not an actual match.

Another unusual interaction with the dcache is not storing negative
dentries like other filesystems doing a d_add(dentry, NULL) when an ENOENT
is returned. During the VFS lookup, if a dentry returned has no inode,
dput is called and ENOENT is returned. By not doing a d_add, this actually
removes it completely from the dcache to be reused. create/rename have to
be modified to support unhashed dentries being passed in.

SGI-PV: 981521
SGI-Modid: xfs-linux-melb:xfs-kern:31208a

Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
2008-07-28 16:58:40 +10:00
..
9p
adfs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
affs [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
afs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
autofs
autofs4 autofs4: remove unused ioctls 2008-07-24 10:47:33 -07:00
befs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
bfs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
cifs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
coda [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
configfs
cramfs
debugfs
devpts
dlm locks: add special return value for asynchronous locks 2008-07-25 10:53:47 -07:00
ecryptfs [PATCH] kill nameidata passing to permission(), rename to inode_permission() 2008-07-26 20:53:31 -04:00
efs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
exportfs
ext2 [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
ext3 [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
ext4 [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
fat [patch 3/4] fat: dont call notify_change 2008-07-26 20:53:27 -04:00
freevxfs
fuse [PATCH] fix MAY_CHDIR/MAY_ACCESS/LOOKUP_ACCESS mess 2008-07-26 20:53:21 -04:00
gfs2 [PATCH] don't pass nameidata to gfs2_lookupi() 2008-07-26 20:53:36 -04:00
hfs [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
hfsplus [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
hostfs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
hpfs [patch 05/14] hpfs: dont call permission() 2008-07-26 20:53:13 -04:00
hppfs [patch] hppfs: remove hppfs_permission 2008-07-26 20:53:07 -04:00
hugetlbfs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
isofs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
jbd jbd: don't abort if flushing file data failed 2008-07-25 10:53:32 -07:00
jbd2
jffs2 Merge git://git.infradead.org/mtd-2.6 2008-07-26 20:30:56 -07:00
jfs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
lockd locks: add special return value for asynchronous locks 2008-07-25 10:53:47 -07:00
minix SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
msdos fatfs: add UTC timestamp option 2008-07-25 10:53:34 -07:00
ncpfs [PATCH] don't pass nameidata to __ncp_lookup_validate() 2008-07-26 20:53:37 -04:00
nfs NFS: Ensure we call nfs_sb_deactive() after releasing the directory inode 2008-07-27 18:20:51 -04:00
nfs_common
nfsd [PATCH] get rid of indirect users of namei.h 2008-07-26 20:53:42 -04:00
nls
ntfs [patch 3/5] vfs: change remove_suid() to file_remove_suid() 2008-07-26 20:53:16 -04:00
ocfs2 [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
omfs omfs: update kbuild to include OMFS 2008-07-26 12:00:05 -07:00
openpromfs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
partitions fs/partitions/efi: convert to pr_debug 2008-07-25 10:53:44 -07:00
proc task IO accounting: move all IO statistics in struct task_io_accounting 2008-07-27 16:12:28 -07:00
qnx4 SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
ramfs
reiserfs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
romfs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
smbfs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
sysfs Use WARN() in fs/sysfs 2008-07-26 12:00:07 -07:00
sysv SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
ubifs [PATCH] get rid of indirect users of namei.h 2008-07-26 20:53:42 -04:00
udf SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
ufs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
vfat fatfs: add UTC timestamp option 2008-07-25 10:53:34 -07:00
xfs [XFS] Return case-insensitive match for dentry cache 2008-07-28 16:58:40 +10:00
aio.c [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
anon_inodes.c
attr.c [patch 4/4] vfs: immutable inode checking cleanup 2008-07-26 20:53:28 -04:00
bad_inode.c [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
binfmt_aout.c tracehook: exec 2008-07-26 12:00:08 -07:00
binfmt_elf_fdpic.c tracehook: exec 2008-07-26 12:00:08 -07:00
binfmt_elf.c tracehook: exec 2008-07-26 12:00:08 -07:00
binfmt_em86.c
binfmt_flat.c tracehook: exec 2008-07-26 12:00:08 -07:00
binfmt_misc.c
binfmt_script.c
binfmt_som.c tracehook: exec 2008-07-26 12:00:08 -07:00
bio-integrity.c
bio.c dio: use get_user_pages_fast 2008-07-26 12:00:06 -07:00
block_dev.c SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
buffer.c Use WARN() in fs/ 2008-07-26 12:00:07 -07:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c remove unused #include <linux/dirent.h>'s 2008-07-25 10:53:34 -07:00
compat.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
dcache.c dcache: Add case-insensitive support d_ci_add() routine 2008-07-28 16:58:39 +10:00
dcookies.c
direct-io.c dio: use get_user_pages_fast 2008-07-26 12:00:06 -07:00
dnotify.c
dquot.c quota: implement sending information via netlink about user below quota 2008-07-25 10:53:35 -07:00
drop_caches.c
eventfd.c flag parameters: check magic constants 2008-07-24 10:47:29 -07:00
eventpoll.c flag parameters add-on: remove epoll_create size param 2008-07-24 10:47:29 -07:00
exec.c [PATCH] get rid of __user_path_lookup_open 2008-07-26 20:53:41 -04:00
fcntl.c [PATCH] fix RLIM_NOFILE handling 2008-07-26 20:53:45 -04:00
fifo.c [PATCH] reuse xxx_fifo_fops for xxx_pipe_fops 2008-07-26 20:53:06 -04:00
file_table.c [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
file.c [PATCH] fix RLIM_NOFILE handling 2008-07-26 20:53:45 -04:00
filesystems.c
fs-writeback.c
generic_acl.c
inode.c SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
inotify_user.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
inotify.c
internal.h
ioctl.c
ioprio.c
Kconfig omfs: update kbuild to include OMFS 2008-07-26 12:00:05 -07:00
Kconfig.binfmt
libfs.c
locks.c SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
Makefile omfs: update kbuild to include OMFS 2008-07-26 12:00:05 -07:00
mbcache.c
mpage.c
namei.c [PATCH] get rid of __user_path_lookup_open 2008-07-26 20:53:41 -04:00
namespace.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
nfsctl.c
no-block.c
open.c [PATCH] fix RLIM_NOFILE handling 2008-07-26 20:53:45 -04:00
pipe.c [PATCH] reuse xxx_fifo_fops for xxx_pipe_fops 2008-07-26 20:53:06 -04:00
pnode.c
pnode.h
posix_acl.c
quota_v1.c quota: move function-macros from quota.h to quotaops.h 2008-07-25 10:53:35 -07:00
quota_v2.c quota: move function-macros from quota.h to quotaops.h 2008-07-25 10:53:35 -07:00
quota.c quota: cleanup loop in sync_dquots() 2008-07-25 10:53:35 -07:00
read_write.c
read_write.h
readdir.c
select.c
seq_file.c
signalfd.c flag parameters: check magic constants 2008-07-24 10:47:29 -07:00
splice.c [patch 3/5] vfs: change remove_suid() to file_remove_suid() 2008-07-26 20:53:16 -04:00
stack.c
stat.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
super.c
sync.c
timerfd.c flag parameters: check magic constants 2008-07-24 10:47:29 -07:00
utimes.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
xattr_acl.c
xattr.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00