linux.git/fs/dcache.c, branch v2.6.26

[patch 2/3] vfs: dcache cleanups

2008-06-23T17:07:00+00:00

Comment from Al Viro: add prepend_name() wrapper.

Signed-off-by: Miklos Szeredi 
Signed-off-by: Al Viro

[patch 1/3] vfs: dcache sparse fixes

2008-06-23T17:06:36+00:00

Fix the following sparse warnings:

fs/dcache.c:2183:19: warning: symbol 'filp_cachep' was not declared. Should it be static?
fs/dcache.c:115:3: warning: context imbalance in 'dentry_iput' - unexpected unlock
fs/dcache.c:188:2: warning: context imbalance in 'dput' - different lock contexts for basic block
fs/dcache.c:400:2: warning: context imbalance in 'prune_one_dentry' - different lock contexts for basic block
fs/dcache.c:431:22: warning: context imbalance in 'prune_dcache' - different lock contexts for basic block
fs/dcache.c:563:2: warning: context imbalance in 'shrink_dcache_sb' - different lock contexts for basic block
fs/dcache.c:1385:6: warning: context imbalance in 'd_delete' - wrong count at exit
fs/dcache.c:1636:2: warning: context imbalance in '__d_unalias' - unexpected unlock
fs/dcache.c:1735:2: warning: context imbalance in 'd_materialise_unique' - different lock contexts for basic block

Signed-off-by: Miklos Szeredi 
Reviewed-by: Matthew Wilcox 
Acked-by: Christoph Hellwig 
Signed-off-by: Al Viro

[patch 3/3] vfs: make d_path() consistent across mount operations

2008-06-23T17:06:13+00:00

The path that __d_path() computes can become slightly inconsistent when it
races with mount operations: it grabs the vfsmount_lock when traversing mount
points but immediately drops it again, only to re-grab it when it reaches the
next mount point.  The result is that the filename computed is not always
consisent, and the file may never have had that name. (This is unlikely, but
still possible.)

Fix this by grabbing the vfsmount_lock for the whole duration of
__d_path().

Signed-off-by: Andreas Gruenbacher 
Signed-off-by: John Johansen 
Signed-off-by: Miklos Szeredi 
Acked-by: Christoph Hellwig 
Signed-off-by: Al Viro

[patch 2/4] fs: make struct file arg to d_path const

2008-06-23T15:52:30+00:00

Signed-off-by: Jan Engelhardt 
Cc: Al Viro 
Signed-off-by: Andrew Morton 
Signed-off-by: Al Viro

[patch 2/7] vfs: mountinfo: add seq_file_root()

2008-04-23T04:04:38+00:00

Add a new function:

  seq_file_root()

This is similar to seq_path(), but calculates the path relative to the
given root, instead of current->fs->root.  If the path was unreachable
from root, then modify the root parameter to reflect this.

Signed-off-by: Miklos Szeredi 
Signed-off-by: Al Viro

[patch 1/7] vfs: mountinfo: add dentry_path()

2008-04-23T04:04:32+00:00

[mszeredi@suse.cz] split big patch into managable chunks

Add the following functions:

  dentry_path()
  seq_dentry()

These are similar to d_path() and seq_path().  But instead of
calculating the path within a mount namespace, they calculate the path
from the root of the filesystem to a given dentry, ignoring mounts
completely.

Signed-off-by: Ram Pai 
Signed-off-by: Miklos Szeredi 
Signed-off-by: Al Viro

dentries: Extract common code to remove dentry from lru

2008-02-15T05:17:09+00:00

Extract the common code to remove a dentry from the lru into a new function
dentry_lru_remove().

Two call sites used list_del() instead of list_del_init().  AFAIK the
performance of both is the same.  dentry_lru_remove() does a list_del_init().

As a result dentry->d_lru is now always empty when a dentry is freed.

Signed-off-by: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

d_path: Make d_path() use a struct path

2008-02-15T05:17:09+00:00

d_path() is used on a  pair.  Lets use a struct path to
reflect this.

[akpm@linux-foundation.org: fix build in mm/memory.c]
Signed-off-by: Jan Blunck 
Acked-by: Bryan Wu 
Acked-by: Christoph Hellwig 
Cc: Al Viro 
Cc: "J. Bruce Fields" 
Cc: Neil Brown 
Cc: Michael Halcrow 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

d_path: kerneldoc cleanup

2008-02-15T05:17:08+00:00

Move and update d_path() kernel API documentation.

Signed-off-by: Jan Blunck 
Acked-by: Christoph Hellwig 
Cc: Al Viro 
Cc: "J. Bruce Fields" 
Cc: Neil Brown 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

One less parameter to __d_path

2008-02-15T05:17:08+00:00

All callers to __d_path pass the dentry and vfsmount of a struct path to
__d_path.  Pass the struct path directly, instead.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Andreas Gruenbacher 
Signed-off-by: Jan Blunck 
Acked-by: Christoph Hellwig 
Cc: Al Viro 
Cc: "J. Bruce Fields" 
Cc: Neil Brown 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds