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Documentation/filesystems/vfs.txt: fix ->repeasepage() description 

->releasepage() does not remove the page from the mapping.

Acked-by: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrew Morton 2010-12-02 14:31:19 -08:00 committed by Linus Torvalds
parent 64141da587
commit 4fe65cab84
1 changed files with 4 additions and 5 deletions
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9
Documentation/filesystems/vfs.txt
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@ -660,11 +660,10 @@ struct address_space_operations {
releasepage: releasepage is called on PagePrivate pages to indicate
that the page should be freed if possible. ->releasepage
should remove any private data from the page and clear the
PagePrivate flag. It may also remove the page from the
address_space. If this fails for some reason, it may indicate
failure with a 0 return value.
This is used in two distinct though related cases. The first
is when the VM finds a clean page with no active users and
PagePrivate flag. If releasepage() fails for some reason, it must
indicate failure with a 0 return value.
releasepage() is used in two distinct though related cases. The
first is when the VM finds a clean page with no active users and
wants to make it a free page. If ->releasepage succeeds, the
page will be removed from the address_space and become free.