diff options
Diffstat (limited to 'Documentation/filesystems/Locking')
-rw-r--r-- | Documentation/filesystems/Locking | 12 |
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 | |||
180 | writepages: no | 184 | writepages: no |
181 | set_page_dirty no no | 185 | set_page_dirty no no |
182 | readpages: no | 186 | readpages: no |
183 | prepare_write: no yes yes | ||
184 | commit_write: no yes yes | ||
185 | write_begin: no locks the page yes | 187 | write_begin: no locks the page yes |
186 | write_end: no yes, unlocks yes | 188 | write_end: no yes, unlocks yes |
187 | perform_write: no n/a yes | 189 | perform_write: no n/a yes |
@@ -191,7 +193,7 @@ releasepage: no yes | |||
191 | direct_IO: no | 193 | direct_IO: no |
192 | launder_page: no yes | 194 | launder_page: no yes |
193 | 195 | ||
194 | ->prepare_write(), ->commit_write(), ->sync_page() and ->readpage() | 196 | ->write_begin(), ->write_end(), ->sync_page() and ->readpage() |
195 | may be called from the request handler (/dev/loop). | 197 | may 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 |