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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-15 02:09:00 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-15 02:09:00 +0100 |
commit | 80eabba70260dcb55b05098f6c1fecbe5c0e518b (patch) | |
tree | c9f5d19803a3387d2b9d8a6998eb9c58bad2a15a /fs/ext4 | |
parent | docs: add back 'Documentation/Changes' file (as symlink) (diff) | |
parent | fs: Remove unmap_underlying_metadata (diff) | |
download | linux-80eabba70260dcb55b05098f6c1fecbe5c0e518b.tar.xz linux-80eabba70260dcb55b05098f6c1fecbe5c0e518b.zip |
Merge branch 'for-4.10/fs-unmap' of git://git.kernel.dk/linux-block
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
Diffstat (limited to 'fs/ext4')
-rw-r--r-- | fs/ext4/extents.c | 13 | ||||
-rw-r--r-- | fs/ext4/inode.c | 18 | ||||
-rw-r--r-- | fs/ext4/page-io.c | 2 |
3 files changed, 8 insertions, 25 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 3e1014fe835e..b1f8416923ab 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -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; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 72d593fa690d..88d57af1b516 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -661,12 +661,8 @@ found: if (flags & EXT4_GET_BLOCKS_ZERO && map->m_flags & EXT4_MAP_MAPPED && map->m_flags & EXT4_MAP_NEW) { - ext4_lblk_t i; - - for (i = 0; i < map->m_len; i++) { - unmap_underlying_metadata(inode->i_sb->s_bdev, - map->m_pblk + i); - } + clean_bdev_aliases(inode->i_sb->s_bdev, map->m_pblk, + map->m_len); ret = ext4_issue_zeroout(inode, map->m_lblk, map->m_pblk, map->m_len); if (ret) { @@ -1137,8 +1133,7 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len, if (err) break; if (buffer_new(bh)) { - unmap_underlying_metadata(bh->b_bdev, - bh->b_blocknr); + clean_bdev_bh_alias(bh); if (PageUptodate(page)) { clear_buffer_new(bh); set_buffer_uptodate(bh); @@ -2371,11 +2366,8 @@ static int mpage_map_one_extent(handle_t *handle, struct mpage_da_data *mpd) BUG_ON(map->m_len == 0); if (map->m_flags & EXT4_MAP_NEW) { - struct block_device *bdev = inode->i_sb->s_bdev; - int i; - - for (i = 0; i < map->m_len; i++) - unmap_underlying_metadata(bdev, map->m_pblk + i); + clean_bdev_aliases(inode->i_sb->s_bdev, map->m_pblk, + map->m_len); } return 0; } diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index e2332a65e8fb..d83b0f3c5fe9 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -457,7 +457,7 @@ int ext4_bio_write_page(struct ext4_io_submit *io, } if (buffer_new(bh)) { clear_buffer_new(bh); - unmap_underlying_metadata(bh->b_bdev, bh->b_blocknr); + clean_bdev_bh_alias(bh); } set_buffer_async_write(bh); nr_to_submit++; |