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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-26 15:30:40 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-26 15:30:40 +0200 |
| commit | 1503af661947b7a4a09355cc2ae6aa0d43f16776 (patch) | |
| tree | 5bfcfadf2dd2d98c2ad251c96d7ee43a6903819a /Documentation/filesystems/Locking | |
| parent | a31863168660c6b6f6c7ffe05bb6a38e97803326 (diff) | |
| parent | 024e8ac04453b3525448c31ef39848cf675ba6db (diff) | |
| download | kernel-crypto-1503af661947b7a4a09355cc2ae6aa0d43f16776.tar.gz kernel-crypto-1503af661947b7a4a09355cc2ae6aa0d43f16776.tar.xz kernel-crypto-1503af661947b7a4a09355cc2ae6aa0d43f16776.zip | |
Merge branch 'linus' into x86/header-guards
Conflicts:
include/asm-x86/gpio.h
include/asm-x86/ide.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/filesystems/Locking')
| -rw-r--r-- | Documentation/filesystems/Locking | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 8b22d7d8b99..680fb566b92 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -510,6 +510,7 @@ prototypes: void (*close)(struct vm_area_struct*); int (*fault)(struct vm_area_struct*, struct vm_fault *); int (*page_mkwrite)(struct vm_area_struct *, struct page *); + int (*access)(struct vm_area_struct *, unsigned long, void*, int, int); locking rules: BKL mmap_sem PageLocked(page) @@ -517,6 +518,7 @@ open: no yes close: no yes fault: no yes page_mkwrite: no yes no +access: no yes ->page_mkwrite() is called when a previously read-only page is about to become writeable. The file system is responsible for @@ -525,6 +527,11 @@ taking to lock out truncate, the page range should be verified to be within i_size. The page mapping should also be checked that it is not NULL. + ->access() is called when get_user_pages() fails in +acces_process_vm(), typically used to debug a process through +/proc/pid/mem or ptrace. This function is needed only for +VM_IO | VM_PFNMAP VMAs. + ================================================================================ Dubious stuff |