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-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:
161 int (*set_page_dirty)(struct page *page); 161 int (*set_page_dirty)(struct page *page);
162 int (*readpages)(struct file *filp, struct address_space *mapping, 162 int (*readpages)(struct file *filp, struct address_space *mapping,
163 struct list_head *pages, unsigned nr_pages); 163 struct list_head *pages, unsigned nr_pages);
164 int (*prepare_write)(struct file *, struct page *, unsigned, unsigned); 164 int (*write_begin)(struct file *, struct address_space *mapping,
165 int (*commit_write)(struct file *, struct page *, unsigned, unsigned); 165 loff_t pos, unsigned len, unsigned flags,
166 struct page **pagep, void **fsdata);
167 int (*write_end)(struct file *, struct address_space *mapping,
168 loff_t pos, unsigned len, unsigned copied,
169 struct page *page, void *fsdata);
166 sector_t (*bmap)(struct address_space *, sector_t); 170 sector_t (*bmap)(struct address_space *, sector_t);
167 int (*invalidatepage) (struct page *, unsigned long); 171 int (*invalidatepage) (struct page *, unsigned long);
168 int (*releasepage) (struct page *, int); 172 int (*releasepage) (struct page *, int);
@@ -180,8 +184,6 @@ sync_page: no maybe
180writepages: no 184writepages: no
181set_page_dirty no no 185set_page_dirty no no
182readpages: no 186readpages: no
183prepare_write: no yes yes
184commit_write: no yes yes
185write_begin: no locks the page yes 187write_begin: no locks the page yes
186write_end: no yes, unlocks yes 188write_end: no yes, unlocks yes
187perform_write: no n/a yes 189perform_write: no n/a yes
@@ -191,7 +193,7 @@ releasepage: no yes
191direct_IO: no 193direct_IO: no
192launder_page: no yes 194launder_page: no yes
193 195
194 ->prepare_write(), ->commit_write(), ->sync_page() and ->readpage() 196 ->write_begin(), ->write_end(), ->sync_page() and ->readpage()
195may be called from the request handler (/dev/loop). 197may be called from the request handler (/dev/loop).
196 198
197 ->readpage() unlocks the page, either synchronously or via I/O 199 ->readpage() unlocks the page, either synchronously or via I/O