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| author | Sunil Mushran <sunil.mushran@oracle.com> | 2011-07-25 14:58:15 -0700 |
|---|---|---|
| committer | Sunil Mushran <sunil.mushran@oracle.com> | 2011-07-25 14:58:15 -0700 |
| commit | 93862d5e1ab875664c6cc95254fc365028a48bb1 (patch) | |
| tree | 3299a37486b2265e051a4c641aa7cfbb309a69d6 /fs/xfs/xfs_btree.h | |
| parent | 5cffff9e29866a3de98c2c25135b3199491f93b0 (diff) | |
| download | linux-93862d5e1ab875664c6cc95254fc365028a48bb1.tar.bz2 | |
ocfs2: Implement llseek()
ocfs2 implements its own llseek() to provide the SEEK_HOLE/SEEK_DATA
functionality.
SEEK_HOLE sets the file pointer to the start of either a hole or an unwritten
(preallocated) extent, that is greater than or equal to the supplied offset.
SEEK_DATA sets the file pointer to the start of an allocated extent (not
unwritten) that is greater than or equal to the supplied offset.
If the supplied offset is on a desired region, then the file pointer is set
to it. Offsets greater than or equal to the file size return -ENXIO.
Unwritten (preallocated) extents are considered holes because the file system
treats reads to such regions in the same way as it does to holes.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Diffstat (limited to 'fs/xfs/xfs_btree.h')
0 files changed, 0 insertions, 0 deletions