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ocfs2: allow for more than one data extent when creating xattr 

Orabug: 18108070

ocfs2_xattr_extend_allocation() hits panic when creating xattr during
data extent alloc phase.  The problem occurs if due to local alloc
fragmentation, clusters are spread over multiple extents.  In this case
ocfs2_add_clusters_in_btree() finds no space to store more than one
extent record and therefore fails returning RESTART_META.  The situation
is anticipated for xattr update case but not xattr create case.  This
fix simply ports that code to create case.

Signed-off-by: Tariq Saeed <tariq.x.saeed@oracle.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Tariq Saeed 2014-04-03 14:47:03 -07:00 committed by Linus Torvalds
parent a35ad97cd4
commit 3ed2be719e
1 changed files with 8 additions and 1 deletions
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9
fs/ocfs2/xattr.c
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@ -3200,8 +3200,15 @@ meta_guess:
clusters_add += 1;
}
} else {
meta_add += 1;
credits += OCFS2_XATTR_BLOCK_CREATE_CREDITS;
if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) {
struct ocfs2_extent_list *el = &def_xv.xv.xr_list;
meta_add += ocfs2_extend_meta_needed(el);
credits += ocfs2_calc_extend_credits(inode->i_sb,
el);
} else {
meta_add += 1;
}
}
out:
if (clusters_need)