[PATCH 32/33] nfs: fix various memory recursions possible with swap over NFS.
From: Peter Zijlstra <hidden>
Date: 2007-10-30 16:13:59
Also in:
linux-mm, lkml
GFP_NOFS is not enough, since swap traffic is IO, hence fall back to GFP_NOIO. Signed-off-by: Peter Zijlstra <redacted> --- fs/nfs/pagelist.c | 2 +- fs/nfs/write.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) Index: linux-2.6/fs/nfs/write.c ===================================================================
--- linux-2.6.orig/fs/nfs/write.c
+++ linux-2.6/fs/nfs/write.c@@ -44,7 +44,7 @@ static struct kmem_cache *nfs_wdata_cach struct nfs_write_data *nfs_commit_alloc(void) { - struct nfs_write_data *p = kmem_cache_alloc(nfs_wdata_cachep, GFP_NOFS); + struct nfs_write_data *p = kmem_cache_alloc(nfs_wdata_cachep, GFP_NOIO); if (p) { memset(p, 0, sizeof(*p));
@@ -68,7 +68,7 @@ void nfs_commit_free(struct nfs_write_da struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount) { - struct nfs_write_data *p = kmem_cache_alloc(nfs_wdata_cachep, GFP_NOFS); + struct nfs_write_data *p = kmem_cache_alloc(nfs_wdata_cachep, GFP_NOIO); if (p) { memset(p, 0, sizeof(*p));
@@ -77,7 +77,7 @@ struct nfs_write_data *nfs_writedata_all if (pagecount <= ARRAY_SIZE(p->page_array)) p->pagevec = p->page_array; else { - p->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_NOFS); + p->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_NOIO); if (!p->pagevec) { kmem_cache_free(nfs_wdata_cachep, p); p = NULL;
Index: linux-2.6/fs/nfs/pagelist.c ===================================================================
--- linux-2.6.orig/fs/nfs/pagelist.c
+++ linux-2.6/fs/nfs/pagelist.c@@ -27,7 +27,7 @@ static inline struct nfs_page * nfs_page_alloc(void) { struct nfs_page *p; - p = kmem_cache_alloc(nfs_page_cachep, GFP_KERNEL); + p = kmem_cache_alloc(nfs_page_cachep, GFP_NOIO); if (p) { memset(p, 0, sizeof(*p)); INIT_LIST_HEAD(&p->wb_list); --