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authorLinus Torvalds <torvalds@linux-foundation.org>2010-12-14 08:51:12 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-12-14 08:51:12 -0800
commit38971ce2fac484249d697fe48a9b0851a0b62572 (patch)
tree5ff677e2f2225a8b7971c2bb84e1c66bc4c54d38 /Documentation/filesystems/vfs.txt
parentcaa4a59574a39e6574664e82b92455d41eca27a8 (diff)
parent5b362ac3799ff4225c40935500f520cad4d7ed66 (diff)
downloadlinux-linaro-stable-38971ce2fac484249d697fe48a9b0851a0b62572.tar.gz
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Fix panic after nfs_umount() nfs: remove extraneous and problematic calls to nfs_clear_request nfs: kernel should return EPROTONOSUPPORT when not support NFSv4 NFS: Fix fcntl F_GETLK not reporting some conflicts nfs: Discard ACL cache on mode update NFS: Readdir cleanups NFS: nfs_readdir_search_for_cookie() don't mark as eof if cookie not found NFS: Fix a memory leak in nfs_readdir Call the filesystem back whenever a page is removed from the page cache NFS: Ensure we use the correct cookie in nfs_readdir_xdr_filler
Diffstat (limited to 'Documentation/filesystems/vfs.txt')
-rw-r--r--Documentation/filesystems/vfs.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 55c28b79d8dc..20899e095e7e 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -534,6 +534,7 @@ struct address_space_operations {
sector_t (*bmap)(struct address_space *, sector_t);
int (*invalidatepage) (struct page *, unsigned long);
int (*releasepage) (struct page *, int);
+ void (*freepage)(struct page *);
ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov,
loff_t offset, unsigned long nr_segs);
struct page* (*get_xip_page)(struct address_space *, sector_t,
@@ -678,6 +679,12 @@ struct address_space_operations {
need to ensure this. Possibly it can clear the PageUptodate
bit if it cannot free private data yet.
+ freepage: freepage is called once the page is no longer visible in
+ the page cache in order to allow the cleanup of any private
+ data. Since it may be called by the memory reclaimer, it
+ should not assume that the original address_space mapping still
+ exists, and it should not block.
+
direct_IO: called by the generic read/write routines to perform
direct_IO - that is IO requests which bypass the page cache
and transfer data directly between the storage and the