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authorSteven Whitehouse <swhiteho@redhat.com>2011-08-02 13:17:27 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2011-10-21 12:39:23 +0100
commit40ac218f52aa5cac7dc8082f28b61c8b2b29373c (patch)
tree34e86173a2554b738f0141a1c38ffc3191d2f228 /fs
parent1d4ec642d9f00d4c531b1a4ae0613091ec1f8e9b (diff)
downloadlinux-40ac218f52aa5cac7dc8082f28b61c8b2b29373c.tar.bz2
GFS2: Fix inode allocation error path
If we have got far enough through the inode allocation code path that an inode has already been allocated, then we must call iput to dispose of it, if an error occurs during a later part of the process. This will always be the final iput since there will be no other references to the inode. Unlike when the inode has been unlinked, its block state will be GFS2_BLKST_INODE rather than GFS2_BLKST_UNLINKED so we need to skip the test in ->evict_inode() for this one case in order to ensure that it will be deallocated correctly. This patch adds a new flag in order to ensure that this will happen correctly. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/gfs2/incore.h1
-rw-r--r--fs/gfs2/inode.c6
-rw-r--r--fs/gfs2/super.c12
3 files changed, 14 insertions, 5 deletions
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 892ac37de8ae..be5801a75406 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -267,6 +267,7 @@ struct gfs2_alloc {
enum {
GIF_INVALID = 0,
GIF_QD_LOCKED = 1,
+ GIF_ALLOC_FAILED = 2,
GIF_SW_PAGED = 3,
};
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 900cf986aadc..044efe273b97 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -736,10 +736,12 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
fail_gunlock2:
gfs2_glock_dq_uninit(ghs + 1);
- if (inode && !IS_ERR(inode))
- iput(inode);
fail_gunlock:
gfs2_glock_dq_uninit(ghs);
+ if (inode && !IS_ERR(inode)) {
+ set_bit(GIF_ALLOC_FAILED, &GFS2_I(inode)->i_flags);
+ iput(inode);
+ }
fail:
if (bh)
brelse(bh);
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index afb87615c014..9961de702d1b 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -1471,9 +1471,11 @@ static void gfs2_evict_inode(struct inode *inode)
goto out;
}
- error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED);
- if (error)
- goto out_truncate;
+ if (!test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) {
+ error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED);
+ if (error)
+ goto out_truncate;
+ }
if (test_bit(GIF_INVALID, &ip->i_flags)) {
error = gfs2_inode_refresh(ip);
@@ -1513,6 +1515,10 @@ static void gfs2_evict_inode(struct inode *inode)
goto out_unlock;
out_truncate:
+ gfs2_log_flush(sdp, ip->i_gl);
+ write_inode_now(inode, 1);
+ gfs2_ail_flush(ip->i_gl);
+
/* Case 2 starts here */
error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks);
if (error)