From 3440b6d68a5e787a6a1baba2073ee0c44a9b1632 Mon Sep 17 00:00:00 2001 From: shishir gowda Date: Thu, 10 Nov 2011 16:39:31 +0530 Subject: cluster/distribute: Use local call_cnt while winding layout->cnt might be modified in cbk's or different threads, which will lead to corruptions Change-Id: Icfdab01ac583cb3d27d62f878b79e0098b597952 BUG: 3730 Reviewed-on: http://review.gluster.com/694 Tested-by: Gluster Build System Reviewed-by: Jeff Darcy Reviewed-by: Amar Tumballi --- xlators/cluster/dht/src/dht-common.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'xlators/cluster/dht/src/dht-common.c') diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c index faf575df9af..501bd31e3f5 100644 --- a/xlators/cluster/dht/src/dht-common.c +++ b/xlators/cluster/dht/src/dht-common.c @@ -1137,15 +1137,13 @@ dht_lookup (call_frame_t *frame, xlator_t *this, ret = dict_set_uint32 (local->xattr_req, GLUSTERFS_OPEN_FD_COUNT, 4); - for (i = 0; i < layout->cnt; i++) { + for (i = 0; i < call_cnt; i++) { subvol = layout->list[i].xlator; STACK_WIND (frame, dht_revalidate_cbk, subvol, subvol->fops->lookup, &local->loc, local->xattr_req); - if (!--call_cnt) - break; } } else { do_fresh_lookup: @@ -1806,6 +1804,7 @@ dht_setxattr (call_frame_t *frame, xlator_t *this, uint32_t dir_spread = 0; char value[4096] = {0,}; int forced_rebalance = 0; + int call_cnt = 0; VALIDATE_OR_GOTO (frame, err); @@ -1837,7 +1836,7 @@ dht_setxattr (call_frame_t *frame, xlator_t *this, goto err; } - local->call_cnt = layout->cnt; + local->call_cnt = call_cnt = layout->cnt; /* This key is sent by Unified File and Object storage * to test xattr support in backend. @@ -1849,7 +1848,7 @@ dht_setxattr (call_frame_t *frame, xlator_t *this, goto err; } local->op_ret = 0; - for (i = 0; i < layout->cnt; i++) { + for (i = 0; i < call_cnt; i++) { STACK_WIND (frame, dht_ufo_xattr_cbk, layout->list[i].xlator, layout->list[i].xlator->fops->setxattr, @@ -1946,7 +1945,7 @@ dht_setxattr (call_frame_t *frame, xlator_t *this, goto err; } - for (i = 0; i < layout->cnt; i++) { + for (i = 0; i < call_cnt; i++) { STACK_WIND (frame, dht_err_cbk, layout->list[i].xlator, layout->list[i].xlator->fops->setxattr, @@ -2006,6 +2005,7 @@ dht_removexattr (call_frame_t *frame, xlator_t *this, int op_errno = -1; dht_local_t *local = NULL; dht_layout_t *layout = NULL; + int call_cnt = 0; int i; @@ -2037,10 +2037,10 @@ dht_removexattr (call_frame_t *frame, xlator_t *this, goto err; } - local->call_cnt = layout->cnt; + local->call_cnt = call_cnt = layout->cnt; local->key = gf_strdup (key); - for (i = 0; i < layout->cnt; i++) { + for (i = 0; i < call_cnt; i++) { STACK_WIND (frame, dht_removexattr_cbk, layout->list[i].xlator, layout->list[i].xlator->fops->removexattr, -- cgit