From 1b8ba31a88c5115687095ca2a01bfcaecb489b5a Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Tue, 29 May 2012 10:47:51 +0100 Subject: GFS2: Fix error handling when reading an invalid block from the journal When we read an invalid block from the journal, we should not call withdraw, but simply print a message and return an error. It is up to the caller to then handle that error. In the case of mount that means a failed mount, rather than a withdraw (requiring a reboot). In the case of recovering another nodes journal then we return an error via the uevent. Signed-off-by: Steven Whitehouse --- fs/gfs2/lops.c | 9 +++++++-- fs/gfs2/util.h | 18 +++++++----------- 2 files changed, 14 insertions(+), 13 deletions(-) diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 852c1be1dd3b..8ff95a2d54ee 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -401,9 +401,14 @@ static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd) goto out; set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); - gfs2_meta_check(sdp, bd->bd_bh); - gfs2_pin(sdp, bd->bd_bh); mh = (struct gfs2_meta_header *)bd->bd_bh->b_data; + if (unlikely(mh->mh_magic != cpu_to_be32(GFS2_MAGIC))) { + printk(KERN_ERR + "Attempting to add uninitialised block to journal (inplace block=%lld)\n", + (unsigned long long)bd->bd_bh->b_blocknr); + BUG(); + } + gfs2_pin(sdp, bd->bd_bh); mh->__pad0 = cpu_to_be64(0); mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); sdp->sd_log_num_buf++; diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h index 3586b0dd6aa7..80535739ac7b 100644 --- a/fs/gfs2/util.h +++ b/fs/gfs2/util.h @@ -79,23 +79,19 @@ int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, const char *type, const char *function, char *file, unsigned int line); -static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp, - struct buffer_head *bh, - const char *function, - char *file, unsigned int line) +static inline int gfs2_meta_check(struct gfs2_sbd *sdp, + struct buffer_head *bh) { struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data; u32 magic = be32_to_cpu(mh->mh_magic); - if (unlikely(magic != GFS2_MAGIC)) - return gfs2_meta_check_ii(sdp, bh, "magic number", function, - file, line); + if (unlikely(magic != GFS2_MAGIC)) { + printk(KERN_ERR "GFS2: Magic number missing at %llu\n", + (unsigned long long)bh->b_blocknr); + return -EIO; + } return 0; } -#define gfs2_meta_check(sdp, bh) \ -gfs2_meta_check_i((sdp), (bh), __func__, __FILE__, __LINE__) - - int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, u16 type, u16 t, const char *function, -- cgit v1.2.3