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Merge branch 'for-4.10/fs-unmap' of git://git.kernel.dk/linux-block

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Pull fs meta data unmap optimization from Jens Axboe:
 "A series from Jan Kara, providing a more efficient way for unmapping
  meta data from in the buffer cache than doing it block-by-block.

  Provide a general helper that existing callers can use"

* 'for-4.10/fs-unmap' of git://git.kernel.dk/linux-block:
  fs: Remove unmap_underlying_metadata
  fs: Add helper to clean bdev aliases under a bh and use it
  ext2: Use clean_bdev_aliases() instead of iteration
  ext4: Use clean_bdev_aliases() instead of iteration
  direct-io: Use clean_bdev_aliases() instead of handmade iteration
  fs: Provide function to unmap metadata for a range of blocks
This commit is contained in:
Linus Torvalds
2016-12-14 17:09:00 -08:00
parent 852d21ae1f ce98321bf7
commit 80eabba702
13 changed files with 102 additions and 93 deletions
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13
fs/ext4/extents.c
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@@ -3777,14 +3777,6 @@ out:
return err;
}
static void unmap_underlying_metadata_blocks(struct block_device *bdev,
sector_t block, int count)
{
int i;
for (i = 0; i < count; i++)
unmap_underlying_metadata(bdev, block + i);
}
/*
* Handle EOFBLOCKS_FL flag, clearing it if necessary
*/
@@ -4121,9 +4113,8 @@ out:
* new.
*/
if (allocated > map->m_len) {
unmap_underlying_metadata_blocks(inode->i_sb->s_bdev,
newblock + map->m_len,
allocated - map->m_len);
clean_bdev_aliases(inode->i_sb->s_bdev, newblock + map->m_len,
allocated - map->m_len);
allocated = map->m_len;
}
map->m_len = allocated;