diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-26 19:14:02 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-26 19:14:02 -0400 |
| commit | 8e9d2089723d08d51e66c5eea49253d76e27941e (patch) | |
| tree | cf15609d5eeb0c1f3a39231d8ce793d3c8ad0ed0 /Documentation/filesystems | |
| parent | ba1eb95cf3cc666769afe42eaa15a3a34ae82f94 (diff) | |
| parent | 60aa49243d09afc873f082567d2e3c16634ced84 (diff) | |
Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6
* 'bkl-removal' of git://git.lwn.net/linux-2.6:
Rationalize fasync return values
Move FASYNC bit handling to f_op->fasync()
Use f_lock to protect f_flags
Rename struct file->f_ep_lock
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/Locking | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index ec6a9392a173..4e78ce677843 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking | |||
| @@ -437,8 +437,11 @@ grab BKL for cases when we close a file that had been opened r/w, but that | |||
| 437 | can and should be done using the internal locking with smaller critical areas). | 437 | can and should be done using the internal locking with smaller critical areas). |
| 438 | Current worst offender is ext2_get_block()... | 438 | Current worst offender is ext2_get_block()... |
| 439 | 439 | ||
| 440 | ->fasync() is a mess. This area needs a big cleanup and that will probably | 440 | ->fasync() is called without BKL protection, and is responsible for |
| 441 | affect locking. | 441 | maintaining the FASYNC bit in filp->f_flags. Most instances call |
| 442 | fasync_helper(), which does that maintenance, so it's not normally | ||
| 443 | something one needs to worry about. Return values > 0 will be mapped to | ||
| 444 | zero in the VFS layer. | ||
| 442 | 445 | ||
| 443 | ->readdir() and ->ioctl() on directories must be changed. Ideally we would | 446 | ->readdir() and ->ioctl() on directories must be changed. Ideally we would |
| 444 | move ->readdir() to inode_operations and use a separate method for directory | 447 | move ->readdir() to inode_operations and use a separate method for directory |