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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2007-08-28 21:29:32 +0300
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2007-10-14 13:10:20 +0300
commit33818bbb84cd371b63ed8849cc5264d24c8b3aa2 (patch)
treeecee6a8f02d2d103c6eb33cc6173e74343b1861b /drivers/mtd/ubi/io.c
parentef6075fbfca9139f428d52d60e671da38aa2e212 (diff)
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.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 928476394d5..ba5bc4a5379 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;