From bb9bcf061660661c57ddcf31337529f82414b937 Mon Sep 17 00:00:00 2001 From: Wendy Cheng Date: Wed, 27 Jun 2007 17:07:08 -0400 Subject: [PATCH] [GFS2] Obtaining no_formal_ino from directory entry GFS2 lookup code doesn't ask for inode shared glock. This implies during in-memory inode creation for existing file, GFS2 will not disk-read in the inode contents. This leaves no_formal_ino un-initialized during lookup time. The un-initialized no_formal_ino is subsequently encoded into file handle. Clients will get ESTALE error whenever it tries to access these files. Signed-off-by: S. Wendy Cheng Signed-off-by: Steven Whitehouse --- fs/gfs2/dir.c | 7 ++++--- fs/gfs2/inode.c | 10 ++++++++-- fs/gfs2/inode.h | 3 ++- fs/gfs2/ops_export.c | 4 +++- fs/gfs2/ops_fstype.c | 2 +- fs/gfs2/rgrp.c | 11 ++++++----- 6 files changed, 24 insertions(+), 13 deletions(-) diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index f793e31a05..2beb2f401a 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -1498,9 +1498,10 @@ struct inode *gfs2_dir_search(struct inode *dir, const struct qstr *name) if (dent) { if (IS_ERR(dent)) return ERR_PTR(PTR_ERR(dent)); - inode = gfs2_inode_lookup(dir->i_sb, - be64_to_cpu(dent->de_inum.no_addr), - be16_to_cpu(dent->de_type)); + inode = gfs2_inode_lookup(dir->i_sb, + be16_to_cpu(dent->de_type), + be64_to_cpu(dent->de_inum.no_addr), + be64_to_cpu(dent->de_inum.no_formal_ino)); brelse(bh); return inode; } diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 792d64f69c..26aaf54959 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -86,7 +86,10 @@ static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr) * Returns: A VFS inode, or an error */ -struct inode *gfs2_inode_lookup(struct super_block *sb, u64 no_addr, unsigned int type) +struct inode *gfs2_inode_lookup(struct super_block *sb, + unsigned int type, + u64 no_addr, + u64 no_formal_ino) { struct inode *inode = gfs2_iget(sb, no_addr); struct gfs2_inode *ip = GFS2_I(inode); @@ -100,6 +103,7 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, u64 no_addr, unsigned in struct gfs2_sbd *sdp = GFS2_SB(inode); umode_t mode; inode->i_private = ip; + ip->i_no_formal_ino = no_formal_ino; error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); if (unlikely(error)) @@ -915,7 +919,9 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name, if (error) goto fail_gunlock2; - inode = gfs2_inode_lookup(dir->i_sb, inum.no_addr, IF2DT(mode)); + inode = gfs2_inode_lookup(dir->i_sb, IF2DT(mode), + inum.no_addr, + inum.no_formal_ino); if (IS_ERR(inode)) goto fail_gunlock2; diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index 35375fc43f..3268a2fed6 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -47,7 +47,8 @@ static inline void gfs2_inum_out(const struct gfs2_inode *ip, void gfs2_inode_attr_in(struct gfs2_inode *ip); -struct inode *gfs2_inode_lookup(struct super_block *sb, u64 no_addr, unsigned type); +struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned type, + u64 no_addr, u64 no_formal_ino); struct inode *gfs2_ilookup(struct super_block *sb, u64 no_addr); int gfs2_inode_refresh(struct gfs2_inode *ip); diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c index d07230ee5f..0fe14478a5 100644 --- a/fs/gfs2/ops_export.c +++ b/fs/gfs2/ops_export.c @@ -245,7 +245,9 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj) gfs2_glock_dq_uninit(&rgd_gh); gfs2_glock_dq_uninit(&ri_gh); - inode = gfs2_inode_lookup(sb, inum->no_addr, fh_obj->imode); + inode = gfs2_inode_lookup(sb, fh_obj->imode, + inum->no_addr, + inum->no_formal_ino); if (!inode) goto fail; if (IS_ERR(inode)) { diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index dae1d7142f..cf5aa50505 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -236,7 +236,7 @@ fail: static inline struct inode *gfs2_lookup_root(struct super_block *sb, u64 no_addr) { - return gfs2_inode_lookup(sb, no_addr, DT_DIR); + return gfs2_inode_lookup(sb, DT_DIR, no_addr, 0); } static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 36c523d487..7fb74484af 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -860,18 +860,19 @@ static struct inode *try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked) { struct inode *inode; u32 goal = 0; - u64 ino; + u64 no_addr; for(;;) { goal = rgblk_search(rgd, goal, GFS2_BLKST_UNLINKED, GFS2_BLKST_UNLINKED); if (goal == 0) return 0; - ino = goal + rgd->rd_data0; - if (ino <= *last_unlinked) + no_addr = goal + rgd->rd_data0; + if (no_addr <= *last_unlinked) continue; - *last_unlinked = ino; - inode = gfs2_inode_lookup(rgd->rd_sbd->sd_vfs, ino, DT_UNKNOWN); + *last_unlinked = no_addr; + inode = gfs2_inode_lookup(rgd->rd_sbd->sd_vfs, DT_UNKNOWN, + no_addr, 0); if (!IS_ERR(inode)) return inode; } -- 2.39.5