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author | Wendy Cheng <wcheng@redhat.com> | 2007-08-24 09:15:01 -0400 |
---|---|---|
committer | Steven Whitehouse <swhiteho@redhat.com> | 2007-10-10 08:55:51 +0100 |
commit | e9bd2b3bafd29bf75522546207f0bba0ec4515c2 (patch) | |
tree | fac6201981d94d827390ba23fe8fe6afc2fb0119 /fs | |
parent | c4f68a130fc1795e4a75ec5bdaf9e85d86c22419 (diff) | |
download | linux-stable-e9bd2b3bafd29bf75522546207f0bba0ec4515c2.tar.gz linux-stable-e9bd2b3bafd29bf75522546207f0bba0ec4515c2.tar.bz2 linux-stable-e9bd2b3bafd29bf75522546207f0bba0ec4515c2.zip |
[GFS2] fix inode meta data corruption
Fix a nasty inode meta data corruption issue by keeping the buffer head in
icache array. This buffer needs to stay in memory until journal flush occurs
Otherwise, gfs2_meta_inode_buffer could do a disk read before the inode hits
disk. It ends up with meta data corruptions. The buffer will be released as
part of the existing journal flush logic.
Signed-off-by: S. Wendy Cheng <wcheng@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/gfs2/inode.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 34f7bcdea1e9..013f00b90cc2 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -244,6 +244,11 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) return 0; } +static void gfs2_inode_bh(struct gfs2_inode *ip, struct buffer_head *bh) +{ + ip->i_cache[0] = bh; +} + /** * gfs2_inode_refresh - Refresh the incore copy of the dinode * @ip: The GFS2 inode @@ -688,7 +693,7 @@ out: static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, const struct gfs2_inum_host *inum, unsigned int mode, unsigned int uid, unsigned int gid, - const u64 *generation, dev_t dev) + const u64 *generation, dev_t dev, struct buffer_head **bhp) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); struct gfs2_dinode *di; @@ -743,13 +748,15 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, di->di_mtime_nsec = cpu_to_be32(tv.tv_nsec); di->di_ctime_nsec = cpu_to_be32(tv.tv_nsec); memset(&di->di_reserved, 0, sizeof(di->di_reserved)); + + set_buffer_uptodate(dibh); - brelse(dibh); + *bhp = dibh; } static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, unsigned int mode, const struct gfs2_inum_host *inum, - const u64 *generation, dev_t dev) + const u64 *generation, dev_t dev, struct buffer_head **bhp) { struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode); unsigned int uid, gid; @@ -770,7 +777,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl, if (error) goto out_quota; - init_dinode(dip, gl, inum, mode, uid, gid, generation, dev); + init_dinode(dip, gl, inum, mode, uid, gid, generation, dev, bhp); gfs2_quota_change(dip, +1, uid, gid); gfs2_trans_end(sdp); @@ -909,6 +916,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 }; int error; u64 generation; + struct buffer_head *bh=NULL; if (!name->len || name->len > GFS2_FNAMESIZE) return ERR_PTR(-ENAMETOOLONG); @@ -935,7 +943,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, if (error) goto fail_gunlock; - error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev); + error = make_dinode(dip, ghs[1].gh_gl, mode, &inum, &generation, dev, &bh); if (error) goto fail_gunlock2; @@ -945,6 +953,8 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, if (IS_ERR(inode)) goto fail_gunlock2; + gfs2_inode_bh(GFS2_I(inode), bh); + error = gfs2_inode_refresh(GFS2_I(inode)); if (error) goto fail_gunlock2; |