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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2015-11-11 15:00:35 -0600 |
|---|---|---|
| committer | Bob Peterson <rpeterso@redhat.com> | 2015-11-16 12:00:29 -0600 |
| commit | c8d577038449a718ad0027d1790b6ef4441715d4 (patch) | |
| tree | 7ba2dd87040f008328b528e96ac99b88736188f7 /fs/gfs2/dir.c | |
| parent | 3dd1dd8c696bdb7c8dcc9456cb23558ad1b336b8 (diff) | |
| download | linux-c8d577038449a718ad0027d1790b6ef4441715d4.tar.gz linux-c8d577038449a718ad0027d1790b6ef4441715d4.tar.bz2 linux-c8d577038449a718ad0027d1790b6ef4441715d4.zip | |
gfs2: Extended attribute readahead
When gfs2 allocates an inode and its extended attribute block next to
each other at inode create time, the inode's directory entry indicates
that in de_rahead. In that case, we can readahead the extended
attribute block when we read in the inode.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2/dir.c')
| -rw-r--r-- | fs/gfs2/dir.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index ad8a5b757cc7..c2486598fb87 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -108,7 +108,7 @@ static int gfs2_dir_get_existing_buffer(struct gfs2_inode *ip, u64 block, struct buffer_head *bh; int error; - error = gfs2_meta_read(ip->i_gl, block, DIO_WAIT, &bh); + error = gfs2_meta_read(ip->i_gl, block, DIO_WAIT, 0, &bh); if (error) return error; if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_JD)) { @@ -305,7 +305,7 @@ static int gfs2_dir_read_data(struct gfs2_inode *ip, __be64 *buf, BUG_ON(extlen < 1); bh = gfs2_meta_ra(ip->i_gl, dblock, extlen); } else { - error = gfs2_meta_read(ip->i_gl, dblock, DIO_WAIT, &bh); + error = gfs2_meta_read(ip->i_gl, dblock, DIO_WAIT, 0, &bh); if (error) goto fail; } @@ -723,7 +723,7 @@ static int get_leaf(struct gfs2_inode *dip, u64 leaf_no, { int error; - error = gfs2_meta_read(dip->i_gl, leaf_no, DIO_WAIT, bhp); + error = gfs2_meta_read(dip->i_gl, leaf_no, DIO_WAIT, 0, bhp); if (!error && gfs2_metatype_check(GFS2_SB(&dip->i_inode), *bhp, GFS2_METATYPE_LF)) { /* pr_info("block num=%llu\n", leaf_no); */ error = -EIO; @@ -1560,15 +1560,22 @@ struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *name, dent = gfs2_dirent_search(dir, name, gfs2_dirent_find, &bh); if (dent) { + struct inode *inode; + u16 rahead; + if (IS_ERR(dent)) return ERR_CAST(dent); dtype = be16_to_cpu(dent->de_type); + rahead = be16_to_cpu(dent->de_rahead); addr = be64_to_cpu(dent->de_inum.no_addr); formal_ino = be64_to_cpu(dent->de_inum.no_formal_ino); brelse(bh); if (fail_on_exist) return ERR_PTR(-EEXIST); - return gfs2_inode_lookup(dir->i_sb, dtype, addr, formal_ino, 0); + inode = gfs2_inode_lookup(dir->i_sb, dtype, addr, formal_ino, 0); + if (!IS_ERR(inode)) + GFS2_I(inode)->i_rahead = rahead; + return inode; } return ERR_PTR(-ENOENT); } |