linux.git/fs/open.c, branch v2.6.31

fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls

2009-06-24T12:15:27+00:00

This patch adds ioctls to vfs for compatibility with legacy XFS
pre-allocation ioctls (XFS_IOC_*RESVP*). The implementation
effectively invokes sys_fallocate for the new ioctls.
Also handles the compat_ioctl case.
Note: These legacy ioctls are also implemented by OCFS2.

[AV: folded fixes from hch]

Signed-off-by: Ankit Jain 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Al Viro

fs: introduce mnt_clone_write

2009-06-12T01:36:02+00:00

This patch speeds up lmbench lat_mmap test by about another 2% after the
first patch.

Before:
 avg = 462.286
 std = 5.46106

After:
 avg = 453.12
 std = 9.58257

(50 runs of each, stddev gives a reasonable confidence)

It does this by introducing mnt_clone_write, which avoids some heavyweight
operations of mnt_want_write if called on a vfsmount which we know already
has a write count; and mnt_want_write_file, which can call mnt_clone_write
if the file is open for write.

After these two patches, mnt_want_write and mnt_drop_write go from 7% on
the profile down to 1.3% (including mnt_clone_write).

[AV: mnt_want_write_file() should take file alone and derive mnt from it;
not only all callers have that form, but that's the only mnt about which
we know that it's already held for write if file is opened for write]

Cc: Dave Hansen 
Signed-off-by: Nick Piggin 
Signed-off-by: Al Viro

Switch open_exec() and sys_uselib() to do_open_filp()

2009-05-09T14:49:42+00:00

... and make path_lookup_open() static

Signed-off-by: Al Viro

Get rid of indirect include of fs_struct.h

2009-04-01T03:00:27+00:00

Don't pull it in sched.h; very few files actually need it and those
can include directly.  sched.h itself only needs forward declaration
of struct fs_struct;

Signed-off-by: Al Viro

vfs: Use lowercase names of quota functions

2009-03-26T01:18:35+00:00

Use lowercase names of quota functions instead of old uppercase ones.

Signed-off-by: Jan Kara 
CC: Alexander Viro

[CVE-2009-0029] System call wrappers part 30

2009-01-14T13:15:30+00:00

Signed-off-by: Heiko Carstens

[CVE-2009-0029] System call wrappers part 20

2009-01-14T13:15:26+00:00

Signed-off-by: Heiko Carstens

[CVE-2009-0029] System call wrappers part 17

2009-01-14T13:15:25+00:00

Signed-off-by: Heiko Carstens

[CVE-2009-0029] System call wrappers part 16

2009-01-14T13:15:25+00:00

Signed-off-by: Heiko Carstens

[CVE-2009-0029] System call wrappers part 15

2009-01-14T13:15:24+00:00

Signed-off-by: Heiko Carstens