aleph/lkl_linux
1
0
Fork 0
mirror of https://github.com/lkl/linux.git synced 2025-12-19 16:13:19 +09:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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 <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mikulas Patocka
2011-05-08 20:42:54 +02:00
committed by Linus Torvalds
parent 637b424bf8
commit 7dd29d8d86
4 changed files with 51 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
fs/hpfs/super.c
View File

@@ -102,9 +102,12 @@ static void hpfs_put_super(struct super_block *s)
{
struct hpfs_sb_info *sbi = hpfs_sb(s);
hpfs_lock(s);
unmark_dirty(s);
hpfs_unlock(s);
kfree(sbi->sb_cp_table);
kfree(sbi->sb_bmp_dir);
unmark_dirty(s);
s->s_fs_info = NULL;
kfree(sbi);
}
@@ -490,6 +493,9 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
sbi->sb_bmp_dir = NULL;
sbi->sb_cp_table = NULL;
mutex_init(&sbi->hpfs_mutex);
hpfs_lock(s);
mutex_init(&sbi->hpfs_creation_de);
uid = current_uid();
@@ -669,6 +675,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent)
root->i_blocks = 5;
hpfs_brelse4(&qbh);
}
hpfs_unlock(s);
return 0;
bail4: brelse(bh2);
@@ -676,6 +683,7 @@ bail3: brelse(bh1);
bail2: brelse(bh0);
bail1:
bail0:
hpfs_unlock(s);
kfree(sbi->sb_bmp_dir);
kfree(sbi->sb_cp_table);
s->s_fs_info = NULL;