AcoSail/kernel_optimize_test
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afs: ->writepage() shouldn't call clear_page_dirty_for_io()

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The ->writepage() op shouldn't call clear_page_dirty_for_io() as that has
already been called by the caller.

Fix afs_writepage() by moving the call out of
afs_write_back_from_locked_page() to afs_writepages_region() where it is
needed.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2017-03-16 16:27:49 +00:00
parent 954cd6dc02
commit 65a151094e
1 changed files with 3 additions and 3 deletions
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6
fs/afs/write.c
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@ -231,7 +231,7 @@ int afs_write_begin(struct file *file, struct address_space *mapping,
if (wb->state == AFS_WBACK_PENDING)
wb->state = AFS_WBACK_CONFLICTING;
spin_unlock(&vnode->writeback_lock);
if (PageDirty(page)) {
if (clear_page_dirty_for_io(page)) {
ret = afs_write_back_from_locked_page(wb, page);
if (ret < 0) {
afs_put_writeback(candidate);
@ -353,8 +353,6 @@ static int afs_write_back_from_locked_page(struct afs_writeback *wb,
_enter(",%lx", primary_page->index);
count = 1;
if (!clear_page_dirty_for_io(primary_page))
BUG();
if (test_set_page_writeback(primary_page))
BUG();
@ -542,6 +540,8 @@ static int afs_writepages_region(struct address_space *mapping,
wb->state = AFS_WBACK_WRITING;
spin_unlock(&wb->vnode->writeback_lock);
if (!clear_page_dirty_for_io(page))
BUG();
ret = afs_write_back_from_locked_page(wb, page);
unlock_page(page);
put_page(page);