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UBI: allocate memory with GFP_NOFS

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Use GFP_NOFS flag when allocating memory on I/O path, because otherwise
we may deadlock the filesystem which works on top of us. We observed
the deadlocks with UBIFS. Example:

VFS->FS lock a lock->UBI->kmalloc()->VFS writeback->FS locks the same
lock again.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy
2007-08-28 21:29:32 +03:00
parent ef6075fbfc
commit 33818bbb84
6 changed files with 21 additions and 19 deletions
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2
drivers/mtd/ubi/vtbl.c
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@@ -264,7 +264,7 @@ static int create_vtbl(const struct ubi_device *ubi, struct ubi_scan_info *si,
ubi_msg("create volume table (copy #%d)", copy + 1);
vid_hdr = ubi_zalloc_vid_hdr(ubi);
vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);
if (!vid_hdr)
return -ENOMEM;