[GFS2] Fix change nlink deadlock

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Bugzilla 215088

Fix deadlock in gfs2_change_nlink() while installing RHEL5 into GFS2
partition. The gfs2_rename() apparently needs block allocation for the
new name (into the directory) where it requires rg locks. At the same
time, while updating the nlink count for the replaced file,
gfs2_change_nlink() tries to return the inode meta-data back to resource
group where it needs rg locks too. Our logic doesn't allow process to
acquire these locks recursively by the same process  (RHEL installer)
that results a BUG call. This only happens within rename code path and
only if the destination file exists before the rename operation.

Signed-off-by: S. Wendy Cheng <wcheng@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

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This commit is contained in:

S. Wendy Cheng 2007-01-18 15:56:34 -05:00 • committed by Steven Whitehouse

parent e1d5b18ae9

commit 5509826f1e

3 changed files with 39 additions and 7 deletions

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20

fs/gfs2/inode.c

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1

fs/gfs2/inode.h

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25

fs/gfs2/ops_inode.c

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