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| author |   Dave Chinner <dchinner@redhat.com> | 2010-09-24 21:58:31 +1000 |
|---|---|---|
| committer |   Alex Elder <aelder@sgi.com> | 2010-10-18 15:07:47 -0500 |
| commit | 5adc94c247c3779782c7b0b8b5e28cf50596eb37 (patch) | |
| tree | 95c2fac56cf6b9559b70aeaa43dae5a18b3c3fec /fs/xfs/linux-2.6/xfs_buf.h | |
| parent | xfs: rename xfs_buf_get_nodaddr to be more appropriate (diff) | |
| download | linux-dev-5adc94c247c3779782c7b0b8b5e28cf50596eb37.tar.xz linux-dev-5adc94c247c3779782c7b0b8b5e28cf50596eb37.zip | |
xfs: introduced uncached buffer read primitve
To avoid the need to use cached buffers for single-shot or buffers
cached at the filesystem level, introduce a new buffer read
primitive that bypasses the cache an reads directly from disk.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_buf.h')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index fb30447091d8..57eedc750ee6 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -218,6 +218,9 @@ extern int xfs_buf_associate_memory(xfs_buf_t *, void *, size_t); extern void xfs_buf_hold(xfs_buf_t *); extern void xfs_buf_readahead(xfs_buftarg_t *, xfs_off_t, size_t, xfs_buf_flags_t); +struct xfs_buf *xfs_buf_read_uncached(struct xfs_mount *mp, + struct xfs_buftarg *target, + xfs_daddr_t daddr, size_t length, int flags); /* Releasing Buffers */ extern void xfs_buf_free(xfs_buf_t *); |