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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2007-08-28 21:29:32 +0300 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2007-10-14 13:10:20 +0300 |
| commit | 33818bbb84cd371b63ed8849cc5264d24c8b3aa2 (patch) | |
| tree | ecee6a8f02d2d103c6eb33cc6173e74343b1861b /drivers/mtd/ubi/io.c | |
| parent | ef6075fbfca9139f428d52d60e671da38aa2e212 (diff) | |
| download | talos-op-linux-33818bbb84cd371b63ed8849cc5264d24c8b3aa2.tar.gz talos-op-linux-33818bbb84cd371b63ed8849cc5264d24c8b3aa2.zip | |
UBI: allocate memory with GFP_NOFS
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>
Diffstat (limited to 'drivers/mtd/ubi/io.c')
| -rw-r--r-- | drivers/mtd/ubi/io.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index 928476394d55..ba5bc4a5379e 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -1099,7 +1099,7 @@ static int paranoid_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum) uint32_t crc, hdr_crc; struct ubi_ec_hdr *ec_hdr; - ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL); + ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_NOFS); if (!ec_hdr) return -ENOMEM; @@ -1179,7 +1179,7 @@ static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum) struct ubi_vid_hdr *vid_hdr; void *p; - vid_hdr = ubi_zalloc_vid_hdr(ubi); + vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); if (!vid_hdr) return -ENOMEM; |
