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authorJan Kara <jack@suse.cz>2016-11-04 20:08:15 +0300
committerJens Axboe <axboe@fb.com>2016-11-04 23:34:47 +0300
commite64855c6cfaa0a80c1b71c5f647cb792dc436668 (patch)
tree751d56f17914506a5e54a380f9a4d4519cadfa18 /fs/buffer.c
parent69a9bea146b185be8ec50e80eaecd8e487e689f8 (diff)
downloadlinux-e64855c6cfaa0a80c1b71c5f647cb792dc436668.tar.xz
fs: Add helper to clean bdev aliases under a bh and use it
Add a helper function that clears buffer heads from a block device aliasing passed bh. Use this helper function from filesystems instead of the original unmap_underlying_metadata() to save some boiler plate code and also have a better name for the functionalily since it is not unmapping anything for a *long* time. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/buffer.c')
-rw-r--r--fs/buffer.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index f8beca55240a..912d70169fca 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1821,8 +1821,7 @@ int __block_write_full_page(struct inode *inode, struct page *page,
if (buffer_new(bh)) {
/* blockdev mappings never come here */
clear_buffer_new(bh);
- unmap_underlying_metadata(bh->b_bdev,
- bh->b_blocknr);
+ clean_bdev_bh_alias(bh);
}
}
bh = bh->b_this_page;
@@ -2068,8 +2067,7 @@ int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
}
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);
@@ -2709,7 +2707,7 @@ int nobh_write_begin(struct address_space *mapping,
if (!buffer_mapped(bh))
is_mapped_to_disk = 0;
if (buffer_new(bh))
- unmap_underlying_metadata(bh->b_bdev, bh->b_blocknr);
+ clean_bdev_bh_alias(bh);
if (PageUptodate(page)) {
set_buffer_uptodate(bh);
continue;