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| author | Lukas Czerner <lczerner@redhat.com> | 2010-10-27 21:30:04 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2010-10-27 21:30:04 -0400 |
| commit | 53fdcf992d616484d388a8ab9dad07dc8b8f1178 (patch) | |
| tree | f9542d11f725bfb552636f53eab455f917138f47 | |
| parent | 582987098207f1182ed5c7d01d5fedf7a5f56286 (diff) | |
| download | op-kernel-dev-53fdcf992d616484d388a8ab9dad07dc8b8f1178.zip op-kernel-dev-53fdcf992d616484d388a8ab9dad07dc8b8f1178.tar.gz | |
ext4: don't hold spinlock while calling ext4_issue_discard()
We can't hold the block group spinlock because we ext4_issue_discard()
calls wait and hence can get rescheduled.
Google-Bug-Id: 3017678
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/mballoc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 53472e2..ccdfec6 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4696,12 +4696,12 @@ do_more: * with group lock held. generate_buddy look at * them with group lock_held */ + if (test_opt(sb, DISCARD)) + ext4_issue_discard(sb, block_group, bit, count); ext4_lock_group(sb, block_group); mb_clear_bits(bitmap_bh->b_data, bit, count); mb_free_blocks(inode, &e4b, bit, count); ext4_mb_return_to_preallocation(inode, &e4b, block, count); - if (test_opt(sb, DISCARD)) - ext4_issue_discard(sb, block_group, bit, count); } ret = ext4_free_blks_count(sb, gdp) + count; |
