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authorIngo Molnar <mingo@elte.hu>2008-12-31 08:31:57 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-31 08:31:57 +0100
commita9de18eb761f7c1c860964b2e5addc1a35c7e861 (patch)
tree886e75fdfd09690cd262ca69cb7f5d1d42b48602 /Documentation/filesystems/Locking
parentb2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (diff)
parent6a94cb73064c952255336cc57731904174b2c58f (diff)
Merge branch 'linus' into stackprotector
Conflicts: arch/x86/include/asm/pda.h kernel/fork.c
Diffstat (limited to 'Documentation/filesystems/Locking')
-rw-r--r--Documentation/filesystems/Locking12
1 files changed, 7 insertions, 5 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index 8362860e21a7..23d2f4460deb 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -161,8 +161,12 @@ prototypes:
int (*set_page_dirty)(struct page *page);
int (*readpages)(struct file *filp, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages);
- int (*prepare_write)(struct file *, struct page *, unsigned, unsigned);
- int (*commit_write)(struct file *, struct page *, unsigned, unsigned);
+ int (*write_begin)(struct file *, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata);
+ int (*write_end)(struct file *, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *page, void *fsdata);
sector_t (*bmap)(struct address_space *, sector_t);
int (*invalidatepage) (struct page *, unsigned long);
int (*releasepage) (struct page *, int);
@@ -180,8 +184,6 @@ sync_page: no maybe
writepages: no
set_page_dirty no no
readpages: no
-prepare_write: no yes yes
-commit_write: no yes yes
write_begin: no locks the page yes
write_end: no yes, unlocks yes
perform_write: no n/a yes
@@ -191,7 +193,7 @@ releasepage: no yes
direct_IO: no
launder_page: no yes
- ->prepare_write(), ->commit_write(), ->sync_page() and ->readpage()
+ ->write_begin(), ->write_end(), ->sync_page() and ->readpage()
may be called from the request handler (/dev/loop).
->readpage() unlocks the page, either synchronously or via I/O