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| author |   Andreas Gruenbacher <agruenba@redhat.com> | 2017-03-15 19:12:59 +0100 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2017-10-31 14:26:35 +0100 |
| commit | 3a27411cb4bc3ce31db228e3569ad01b462a4310 (patch) | |
| tree | 368d27aa18ab8867bfb8443b2223d7de421f0123 /fs/gfs2/file.c | |
| parent | GFS2: Switch fiemap implementation to use iomap (diff) | |
| download | linux-dev-3a27411cb4bc3ce31db228e3569ad01b462a4310.tar.xz linux-dev-3a27411cb4bc3ce31db228e3569ad01b462a4310.zip | |
gfs2: Implement SEEK_HOLE / SEEK_DATA via iomap
So far, lseek on gfs2 did not report holes.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2/file.c')
| -rw-r--r-- | fs/gfs2/file.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index c7a904a8fbb4..8fefb80fe830 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -60,9 +60,7 @@ static loff_t gfs2_llseek(struct file *file, loff_t offset, int whence) loff_t error; switch (whence) { - case SEEK_END: /* These reference inode->i_size */ - case SEEK_DATA: - case SEEK_HOLE: + case SEEK_END: error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); if (!error) { @@ -70,8 +68,21 @@ static loff_t gfs2_llseek(struct file *file, loff_t offset, int whence) gfs2_glock_dq_uninit(&i_gh); } break; + + case SEEK_DATA: + error = gfs2_seek_data(file, offset); + break; + + case SEEK_HOLE: + error = gfs2_seek_hole(file, offset); + break; + case SEEK_CUR: case SEEK_SET: + /* + * These don't reference inode->i_size and don't depend on the + * block mapping, so we don't need the glock. + */ error = generic_file_llseek(file, offset, whence); break; default: |