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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2014-02-11 17:49:24 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-05-06 17:32:55 -0400 |
| commit | 7f7f25e82d54870df24d415a7007fbd327da027b (patch) | |
| tree | bac50bd31cd0582a873e1429271299536fb768bc /include/linux/fs.h | |
| parent | xfs: trim the argument lists of xfs_file_{dio,buffered}_aio_write() (diff) | |
| download | linux-dev-7f7f25e82d54870df24d415a7007fbd327da027b.tar.xz linux-dev-7f7f25e82d54870df24d415a7007fbd327da027b.zip | |
replace checking for ->read/->aio_read presence with check in ->f_mode
Since we are about to introduce new methods (read_iter/write_iter), the
tests in a bunch of places would have to grow inconveniently. Check
once (at open() time) and store results in ->f_mode as FMODE_CAN_READ
and FMODE_CAN_WRITE resp. It might end up being a temporary measure -
once everything switches from ->aio_{read,write} to ->{read,write}_iter
it might make sense to return to open-coded checks. We'll see...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 8153396d19b4..75eb71357adf 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -128,6 +128,10 @@ typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset, #define FMODE_ATOMIC_POS ((__force fmode_t)0x8000) /* Write access to underlying fs */ #define FMODE_WRITER ((__force fmode_t)0x10000) +/* Has read method(s) */ +#define FMODE_CAN_READ ((__force fmode_t)0x20000) +/* Has write method(s) */ +#define FMODE_CAN_WRITE ((__force fmode_t)0x40000) /* File was opened by fanotify and shouldn't generate fanotify events */ #define FMODE_NONOTIFY ((__force fmode_t)0x1000000) |