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nfs: check wait_on_bit_lock err in page_group_lock

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Return errors from wait_on_bit_lock from nfs_page_group_lock.

Add a bool argument @wait to nfs_page_group_lock. If true, loop over
wait_on_bit_lock until it returns cleanly. If false, return the error
from wait_on_bit_lock.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Weston Andros Adamson
2014-07-17 20:42:15 -04:00
committed by Trond Myklebust
parent ec25422c66
commit e7029206ff
3 changed files with 28 additions and 9 deletions
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6
fs/nfs/write.c
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@@ -216,7 +216,7 @@ static bool nfs_page_group_covers_page(struct nfs_page *req)
unsigned int pos = 0;
unsigned int len = nfs_page_length(req->wb_page);
nfs_page_group_lock(req);
nfs_page_group_lock(req, true);
do {
tmp = nfs_page_group_search_locked(req->wb_head, pos);
@@ -456,7 +456,9 @@ try_again:
}
/* lock each request in the page group */
nfs_page_group_lock(head);
ret = nfs_page_group_lock(head, false);
if (ret < 0)
return ERR_PTR(ret);
subreq = head;
do {
/*