linux.git/fs/fuse/dir.c, branch v2.6.39

fuse: fix oops in revalidate when called with NULL nameidata

2011-05-10T15:35:58+00:00

Some cases (e.g. ecryptfs) can call ->dentry_revalidate with NULL
nameidata.

https://bugzilla.kernel.org/show_bug.cgi?id=34732

Tyler Hicks pointed out that this bug was introduced by commit
e7c0a16786 "fuse: make fuse_dentry_revalidate() RCU aware"

Reported-by: Witold Baryluk 
Signed-off-by: Miklos Szeredi

fuse: make fuse_dentry_revalidate() RCU aware

2011-03-21T12:58:06+00:00

Only bail out of fuse_dentry_revalidate() on LOOKUP_RCU when blocking
is actually necessary.

CC: Nick Piggin 
Signed-off-by: Miklos Szeredi

fuse: make fuse_permission() RCU aware

2011-03-21T12:58:06+00:00

Only bail out of fuse_permission() on IPERM_FLAG_RCU when blocking is
actually necessary.

CC: Nick Piggin 
Signed-off-by: Miklos Szeredi

fuse: fix d_revalidate oopsen on NFS exports

2011-03-10T08:44:31+00:00

can't blindly check nd->flags in ->d_revalidate()

Signed-off-by: Al Viro

fuse: fix truncate after open

2011-02-25T13:44:58+00:00

Commit e1181ee6 "vfs: pass struct file to do_truncate on O_TRUNC
opens" broke the behavior of open(O_TRUNC|O_RDONLY) in fuse.  Fuse
assumed that when called from open, a truncate() will be done, not an
ftruncate().

Fix by restoring the old behavior, based on the ATTR_OPEN flag.

Signed-off-by: Miklos Szeredi

switch fuse

2011-01-13T01:02:44+00:00

Signed-off-by: Al Viro

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

2011-01-10T15:43:54+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: fix ioctl ABI
  fuse: allow batching of FORGET requests
  fuse: separate queue for FORGET requests
  fuse: ioctl cleanup

Fix up trivial conflict in fs/fuse/inode.c due to RCU lookup having done
the RCU-freeing of the inode in fuse_destroy_inode().

fs: provide rcu-walk aware permission i_ops

2011-01-07T06:50:29+00:00

Signed-off-by: Nick Piggin

fs: rcu-walk aware d_revalidate method

2011-01-07T06:50:29+00:00

Require filesystems be aware of .d_revalidate being called in rcu-walk
mode (nd->flags & LOOKUP_RCU). For now do a simple push down, returning
-ECHILD from all implementations.

Signed-off-by: Nick Piggin

fs: dcache reduce branches in lookup path

2011-01-07T06:50:28+00:00

Reduce some branches and memory accesses in dcache lookup by adding dentry
flags to indicate common d_ops are set, rather than having to check them.
This saves a pointer memory access (dentry->d_op) in common path lookup
situations, and saves another pointer load and branch in cases where we
have d_op but not the particular operation.

Patched with:

git grep -E '[.>]([[:space:]])*d_op([[:space:]])*=' | xargs sed -e 's/\([^\t ]*\)->d_op = \(.*\);/d_set_d_op(\1, \2);/' -e 's/\([^\t ]*\)\.d_op = \(.*\);/d_set_d_op(\&\1, \2);/' -i

Signed-off-by: Nick Piggin