diff options
author | Eric Sandeen <sandeen@redhat.com> | 2011-08-11 10:51:46 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-08-11 20:23:40 -0400 |
commit | d2db60df1e7eb39cf0f378dfc4dd8813666d46ef (patch) | |
tree | ed130d9b6321a88dfd45bdef72585285146413cd /fs/ext3 | |
parent | 72fa59970f8698023045ab0713d66f3f4f96945c (diff) |
ext3: Properly count journal credits for long symlinks
Commit ae54870a1dc9 ("ext3: Fix lock inversion in ext3_symlink()")
recalculated the number of credits needed for a long symlink, in the
process of splitting it into two transactions. However, the first
credit calculation under-counted because if selinux is enabled, credits
are needed to create the selinux xattr as well.
Overrunning the reservation will result in an OOPS in
journal_dirty_metadata() due to this assert:
J_ASSERT_JH(jh, handle->h_buffer_credits > 0);
Fix this by increasing the reservation size.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext3')
-rw-r--r-- | fs/ext3/namei.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c index 6e18a0b7750d..5571708b6a58 100644 --- a/fs/ext3/namei.c +++ b/fs/ext3/namei.c | |||
@@ -2209,9 +2209,11 @@ static int ext3_symlink (struct inode * dir, | |||
2209 | /* | 2209 | /* |
2210 | * For non-fast symlinks, we just allocate inode and put it on | 2210 | * For non-fast symlinks, we just allocate inode and put it on |
2211 | * orphan list in the first transaction => we need bitmap, | 2211 | * orphan list in the first transaction => we need bitmap, |
2212 | * group descriptor, sb, inode block, quota blocks. | 2212 | * group descriptor, sb, inode block, quota blocks, and |
2213 | * possibly selinux xattr blocks. | ||
2213 | */ | 2214 | */ |
2214 | credits = 4 + EXT3_MAXQUOTAS_INIT_BLOCKS(dir->i_sb); | 2215 | credits = 4 + EXT3_MAXQUOTAS_INIT_BLOCKS(dir->i_sb) + |
2216 | EXT3_XATTR_TRANS_BLOCKS; | ||
2215 | } else { | 2217 | } else { |
2216 | /* | 2218 | /* |
2217 | * Fast symlink. We have to add entry to directory | 2219 | * Fast symlink. We have to add entry to directory |