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Relax allocations requirements

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CAS does not need atomic alocations virtually anywhere. GFP_NOIO
should be sufficient in IO path. When allocation buffers during
module initialization use GFP_KERNEL.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski
2019-10-18 19:16:20 -04:00
parent f9f00df576
commit 9b8fdde201
6 changed files with 15 additions and 16 deletions
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2
modules/cas_cache/volume/vol_atomic_dev_bottom.c
View File

@@ -721,7 +721,7 @@ static int cas_atomic_submit_discard_bio(struct cas_atomic_io *atom)
int offset;
unsigned long *cmd_addr = blk_mq_rq_to_pdu(req);
nvm_discard = kmalloc(sizeof(*nvm_discard), GFP_ATOMIC);
nvm_discard = kmalloc(sizeof(*nvm_discard), GFP_NOIO);
if (!nvm_discard) {
return -ENOMEM;
}

8
modules/cas_cache/volume/vol_block_dev_top.c
View File

@@ -187,7 +187,7 @@ static int _blockdev_alloc_many_requests(ocf_core_t core,
flags = 0;
}
data = cas_alloc_blk_data(bio_segments(bio), GFP_ATOMIC);
data = cas_alloc_blk_data(bio_segments(bio), GFP_NOIO);
if (!data) {
CAS_PRINT_RL(KERN_CRIT "BIO data vector allocation error\n");
error = -ENOMEM;
@@ -420,7 +420,7 @@ static int __block_dev_queue_rq(struct request *rq, ocf_core_t core)
}
if (single_io) {
data = cas_alloc_blk_data(size, GFP_ATOMIC);
data = cas_alloc_blk_data(size, GFP_NOIO);
if (data == NULL) {
CAS_PRINT_RL(KERN_CRIT
"Out of memory. Ending IO processing.\n");
@@ -445,7 +445,7 @@ static int __block_dev_queue_rq(struct request *rq, ocf_core_t core)
} else {
struct list_head list = LIST_HEAD_INIT(list);
data = cas_alloc_blk_data(0, GFP_ATOMIC);
data = cas_alloc_blk_data(0, GFP_NOIO);
if (data == NULL) {
printk(KERN_CRIT
"Out of memory. Ending IO processing.\n");
@@ -753,7 +753,7 @@ static int _blockdev_make_request_fast(struct casdsk_disk *dsk,
return CASDSK_BIO_HANDLED;
}
data = cas_alloc_blk_data(bio_segments(bio), GFP_ATOMIC);
data = cas_alloc_blk_data(bio_segments(bio), GFP_NOIO);
if (!data) {
CAS_PRINT_RL(KERN_CRIT "BIO data vector allocation error\n");
CAS_BIO_ENDIO(bio, CAS_BIO_BISIZE(bio), CAS_ERRNO_TO_BLK_STS(-ENOMEM));