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| author | Theodore Ts'o <tytso@mit.edu> | 2013-07-15 12:27:47 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-07-15 12:27:47 -0400 |
| commit | 76828c882630ced08b5ddce22cc0095b05de9bc5 (patch) | |
| tree | 1c053fd00116bfd578ccf6ec8b7b38e236ed14c9 /fs/ext4 | |
| parent | e15f742ce816076497549b955fbec3254820db85 (diff) | |
| download | op-kernel-dev-76828c882630ced08b5ddce22cc0095b05de9bc5.zip op-kernel-dev-76828c882630ced08b5ddce22cc0095b05de9bc5.tar.gz | |
ext4: yield during large unlinks
During large unlink operations on files with extents, we can use a lot
of CPU time. This adds a cond_resched() call when starting to examine
the next level of a multi-level extent tree. Multi-level extent trees
are rare in the first place, and this should rarely be executed.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/extents.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 5930915..cfdc51e 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -2835,6 +2835,9 @@ again: err = -EIO; break; } + /* Yield here to deal with large extent trees. + * Should be a no-op if we did IO above. */ + cond_resched(); if (WARN_ON(i + 1 > depth)) { err = -EIO; break; |
