kernel.git/fs/hpfs/super.c, branch linux-3.2.y

hpfs: remember free space

2014-04-01T23:59:00Z

commit 2cbe5c76fc5e38e9af4b709593146e4b8272b69e upstream. Previously, hpfs scanned all bitmaps each time the user asked for free space using statfs. This patch changes it so that hpfs scans the bitmaps only once, remembes the free space and on next invocation of statfs it returns the value instantly. New versions of wine are hammering on the statfs syscall very heavily, making some games unplayable when they're stored on hpfs, with load times in minutes. This should be backported to the stable kernels because it fixes user-visible problem (excessive level load times in wine). Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds [ kamal: backport to 3.8 (no hpfs_prefetch_bitmap) ] Signed-off-by: Kamal Mostafa Signed-off-by: Ben Hutchings

hpfs: better test for errors

2013-07-27T04:34:29Z

commit 3ebacb05044f82c5f0bb456a894eb9dc57d0ed90 upstream. The test if bitmap access is out of bound could errorneously pass if the device size is divisible by 16384 sectors and we are asking for one bitmap after the end. Check for invalid size in the superblock. Invalid size could cause integer overflows in the rest of the code. Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds Signed-off-by: Ben Hutchings

HPFS: Fix endianity. Make hpfs work on big-endian machines

2011-05-09T16:04:24Z

Fix endianity. Make hpfs work on big-endian machines. Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds

HPFS: Fix a bug that filesystem was not marked dirty when remounting it

2011-05-09T16:04:24Z

Fix a bug that filesystem was not marked dirty when remounting it Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds

HPFS: When marking or clearing the dirty bit, sync the filesystem

2011-05-09T16:04:24Z

When marking or clearing the dirty bit, sync the filesystem Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds

HPFS: Remove CR/LF conversion option

2011-05-09T16:04:23Z

Remove CR/LF conversion option It is unused anyway. It was used on 2.2 kernels or so. Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds

HPFS: Remove remaining locks

2011-05-09T16:04:23Z

Remove remaining locks Because of a new global per-fs lock, no other locks are needed Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds

HPFS: Introduce a global mutex and lock it on every callback from VFS.

2011-05-09T16:04:23Z

Introduce a global mutex and lock it on every callback from VFS. Performance doesn't matter, reviewing the whole code for locking correctness would be too complicated, so simply lock it all. Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds

HPFS: Make HPFS compile on preempt and SMP

2011-05-09T16:04:23Z

Make HPFS compile on preempt and SMP Signed-off-by: Mikulas Patocka Signed-off-by: Linus Torvalds

hpfs: remove the BKL

2011-03-02T21:27:36Z

This removes the BKL in hpfs in a rather awful way, by making the code only work on uniprocessor systems without kernel preemption, as suggested by Andi Kleen. The HPFS code probably has close to zero remaining users on current kernels, all archeological uses of the file system can probably be done with the significant restrictions. The hpfs_lock/hpfs_unlock functions are left in the code, sincen Mikulas has indicated that he is still interested in fixing it in a better way. Signed-off-by: Arnd Bergmann Acked-by: Andi Kleen Cc: Mikulas Patocka Cc: linux-fsdevel@vger.kernel.org