Messages in this thread Patch in this message | | | Date | Tue, 24 Nov 2015 15:00:37 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [PATCH 1/3] zram/zcomp: use GFP_NOIO to allocate streams |
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[..] > static struct zcomp_strm *zcomp_strm_alloc(struct zcomp *comp) > { > - struct zcomp_strm *zstrm = kmalloc(sizeof(*zstrm), GFP_KERNEL); > + struct zcomp_strm *zstrm = kmalloc(sizeof(*zstrm), GFP_NOIO); > if (!zstrm) > return NULL; > > @@ -85,7 +85,7 @@ static struct zcomp_strm *zcomp_strm_alloc(struct zcomp *comp) > * allocate 2 pages. 1 for compressed data, plus 1 extra for the > * case when compressed size is larger than the original one > */ > - zstrm->buffer = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 1); > + zstrm->buffer = (void *)__get_free_pages(GFP_NOIO | __GFP_ZERO, 1); > if (!zstrm->private || !zstrm->buffer) { > zcomp_strm_free(comp, zstrm); > zstrm = NULL;
hm... this is not enough. we allocate
stream GFP_NOIO stream private GFP_KERNEL <<<< still old flags stream buffer
so my patch was something like this:
---
drivers/block/zram/zcomp.c | 4 ++-- drivers/block/zram/zcomp_lz4.c | 2 +- drivers/block/zram/zcomp_lzo.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c index 5cb13ca..c536177 100644 --- a/drivers/block/zram/zcomp.c +++ b/drivers/block/zram/zcomp.c @@ -76,7 +76,7 @@ static void zcomp_strm_free(struct zcomp *comp, struct zcomp_strm *zstrm) */ static struct zcomp_strm *zcomp_strm_alloc(struct zcomp *comp) { - struct zcomp_strm *zstrm = kmalloc(sizeof(*zstrm), GFP_KERNEL); + struct zcomp_strm *zstrm = kmalloc(sizeof(*zstrm), GFP_NOIO); if (!zstrm) return NULL; @@ -85,7 +85,7 @@ static struct zcomp_strm *zcomp_strm_alloc(struct zcomp *comp) * allocate 2 pages. 1 for compressed data, plus 1 extra for the * case when compressed size is larger than the original one */ - zstrm->buffer = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 1); + zstrm->buffer = (void *)__get_free_pages(GFP_NOIO | __GFP_ZERO, 1); if (!zstrm->private || !zstrm->buffer) { zcomp_strm_free(comp, zstrm); zstrm = NULL; diff --git a/drivers/block/zram/zcomp_lz4.c b/drivers/block/zram/zcomp_lz4.c index f2afb7e..ee44b51 100644 --- a/drivers/block/zram/zcomp_lz4.c +++ b/drivers/block/zram/zcomp_lz4.c @@ -15,7 +15,7 @@ static void *zcomp_lz4_create(void) { - return kzalloc(LZ4_MEM_COMPRESS, GFP_KERNEL); + return kzalloc(LZ4_MEM_COMPRESS, GFP_NOIO); } static void zcomp_lz4_destroy(void *private) diff --git a/drivers/block/zram/zcomp_lzo.c b/drivers/block/zram/zcomp_lzo.c index da1bc47..683ce04 100644 --- a/drivers/block/zram/zcomp_lzo.c +++ b/drivers/block/zram/zcomp_lzo.c @@ -15,7 +15,7 @@ static void *lzo_create(void) { - return kzalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL); + return kzalloc(LZO1X_MEM_COMPRESS, GFP_NOIO); } static void lzo_destroy(void *private)
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