AcoSail/kernel_optimize_test
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Merge branch 'btrfs-3.0' of git://github.com/chrismason/linux

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* 'btrfs-3.0' of git://github.com/chrismason/linux:
  Btrfs: make sure not to defrag extents past i_size
  Btrfs: fix recursive auto-defrag
This commit is contained in:
Linus Torvalds 2011-10-13 18:20:40 +12:00
commit b2f9452bd5
1 changed files with 10 additions and 1 deletions
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11
fs/btrfs/ioctl.c
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@ -1047,7 +1047,16 @@ int btrfs_defrag_file(struct inode *inode, struct file *file,
if (!max_to_defrag)
max_to_defrag = last_index - 1;
while (i <= last_index && defrag_count < max_to_defrag) {
/*
* make writeback starts from i, so the defrag range can be
* written sequentially.
*/
if (i < inode->i_mapping->writeback_index)
inode->i_mapping->writeback_index = i;
while (i <= last_index && defrag_count < max_to_defrag &&
(i < (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >>
PAGE_CACHE_SHIFT)) {
/*
* make sure we stop running if someone unmounts
* the FS