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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/inode.c | |
| parent | aac1a55b450c623ec236c0635cdb68408f632e9c (diff) | |
| download | lwn-3a27411cb4bc3ce31db228e3569ad01b462a4310.tar.gz lwn-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/inode.c')
| -rw-r--r-- | fs/gfs2/inode.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 321da48ca123..4749a6b8e4dd 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -2029,6 +2029,44 @@ out: return ret; } +loff_t gfs2_seek_data(struct file *file, loff_t offset) +{ + struct inode *inode = file->f_mapping->host; + struct gfs2_inode *ip = GFS2_I(inode); + struct gfs2_holder gh; + loff_t ret; + + inode_lock_shared(inode); + ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); + if (!ret) + ret = iomap_seek_data(inode, offset, &gfs2_iomap_ops); + gfs2_glock_dq_uninit(&gh); + inode_unlock_shared(inode); + + if (ret < 0) + return ret; + return vfs_setpos(file, ret, inode->i_sb->s_maxbytes); +} + +loff_t gfs2_seek_hole(struct file *file, loff_t offset) +{ + struct inode *inode = file->f_mapping->host; + struct gfs2_inode *ip = GFS2_I(inode); + struct gfs2_holder gh; + loff_t ret; + + inode_lock_shared(inode); + ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh); + if (!ret) + ret = iomap_seek_hole(inode, offset, &gfs2_iomap_ops); + gfs2_glock_dq_uninit(&gh); + inode_unlock_shared(inode); + + if (ret < 0) + return ret; + return vfs_setpos(file, ret, inode->i_sb->s_maxbytes); +} + const struct inode_operations gfs2_file_iops = { .permission = gfs2_permission, .setattr = gfs2_setattr, |