diff options
Diffstat (limited to 'fs/gfs2/meta_io.c')
-rw-r--r-- | fs/gfs2/meta_io.c | 81 |
1 files changed, 10 insertions, 71 deletions
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 4da423985e4f..01ef90253ed1 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -317,7 +317,7 @@ void gfs2_remove_from_journal(struct buffer_head *bh, struct gfs2_trans *tr, int } if (bd) { if (bd->bd_ail) { - gfs2_remove_from_ail(NULL, bd); + gfs2_remove_from_ail(bd); bh->b_private = NULL; bd->bd_bh = NULL; bd->bd_blkno = bh->b_blocknr; @@ -358,32 +358,6 @@ void gfs2_meta_wipe(struct gfs2_inode *ip, u64 bstart, u32 blen) } /** - * gfs2_meta_cache_flush - get rid of any references on buffers for this inode - * @ip: The GFS2 inode - * - * This releases buffers that are in the most-recently-used array of - * blocks used for indirect block addressing for this inode. - */ - -void gfs2_meta_cache_flush(struct gfs2_inode *ip) -{ - struct buffer_head **bh_slot; - unsigned int x; - - spin_lock(&ip->i_spin); - - for (x = 0; x < GFS2_MAX_META_HEIGHT; x++) { - bh_slot = &ip->i_cache[x]; - if (*bh_slot) { - brelse(*bh_slot); - *bh_slot = NULL; - } - } - - spin_unlock(&ip->i_spin); -} - -/** * gfs2_meta_indirect_buffer - Get a metadata buffer * @ip: The GFS2 inode * @height: The level of this buf in the metadata (indir addr) tree (if any) @@ -391,8 +365,6 @@ void gfs2_meta_cache_flush(struct gfs2_inode *ip) * @new: Non-zero if we may create a new buffer * @bhp: the buffer is returned here * - * Try to use the gfs2_inode's MRU metadata tree cache. - * * Returns: errno */ @@ -401,58 +373,25 @@ int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num, { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); struct gfs2_glock *gl = ip->i_gl; - struct buffer_head *bh = NULL, **bh_slot = ip->i_cache + height; - int in_cache = 0; - - BUG_ON(!gl); - BUG_ON(!sdp); - - spin_lock(&ip->i_spin); - if (*bh_slot && (*bh_slot)->b_blocknr == num) { - bh = *bh_slot; - get_bh(bh); - in_cache = 1; - } - spin_unlock(&ip->i_spin); - - if (!bh) - bh = getbuf(gl, num, CREATE); - - if (!bh) - return -ENOBUFS; + struct buffer_head *bh; + int ret = 0; if (new) { - if (gfs2_assert_warn(sdp, height)) - goto err; - meta_prep_new(bh); + BUG_ON(height == 0); + bh = gfs2_meta_new(gl, num); gfs2_trans_add_bh(ip->i_gl, bh, 1); gfs2_metatype_set(bh, GFS2_METATYPE_IN, GFS2_FORMAT_IN); gfs2_buffer_clear_tail(bh, sizeof(struct gfs2_meta_header)); } else { u32 mtype = height ? GFS2_METATYPE_IN : GFS2_METATYPE_DI; - if (!buffer_uptodate(bh)) { - ll_rw_block(READ_META, 1, &bh); - if (gfs2_meta_wait(sdp, bh)) - goto err; + ret = gfs2_meta_read(gl, num, DIO_WAIT, &bh); + if (ret == 0 && gfs2_metatype_check(sdp, bh, mtype)) { + brelse(bh); + ret = -EIO; } - if (gfs2_metatype_check(sdp, bh, mtype)) - goto err; - } - - if (!in_cache) { - spin_lock(&ip->i_spin); - if (*bh_slot) - brelse(*bh_slot); - *bh_slot = bh; - get_bh(bh); - spin_unlock(&ip->i_spin); } - *bhp = bh; - return 0; -err: - brelse(bh); - return -EIO; + return ret; } /** |