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GFS2 fatal: filesystem consistency error on rename

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This patch fixes a GFS2 problem whereby the first rename after a
mount can result in a file system consistency error being flagged
improperly and cause the file system to withdraw.  The problem is
that the rename code tries to run the rgrp list with function
gfs2_blk2rgrpd before the rgrp list is guaranteed to be read in
from disk.  The patch makes the rename function hold the rindex
glock (as the gfs2_unlink code does today) which reads in the rgrp
list if need be.  There were a total of three places in the rename
code that improperly referenced the rgrp list without the rindex
glock and this patch fixes all three.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Bob Peterson
2010-09-30 10:34:00 -04:00
committed by Steven Whitehouse
parent feb47ca931
commit 46290341cd
3 changed files with 24 additions and 14 deletions
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8
fs/gfs2/rgrp.h
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@@ -39,10 +39,12 @@ static inline void gfs2_alloc_put(struct gfs2_inode *ip)
ip->i_alloc = NULL;
}
extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file,
unsigned int line);
extern int gfs2_inplace_reserve_i(struct gfs2_inode *ip, int hold_rindex,
char *file, unsigned int line);
#define gfs2_inplace_reserve(ip) \
gfs2_inplace_reserve_i((ip), __FILE__, __LINE__)
gfs2_inplace_reserve_i((ip), 1, __FILE__, __LINE__)
#define gfs2_inplace_reserve_ri(ip) \
gfs2_inplace_reserve_i((ip), 0, __FILE__, __LINE__)
extern void gfs2_inplace_release(struct gfs2_inode *ip);