diff options
Diffstat (limited to 'include/linux/nfs_fs.h')
| -rw-r--r-- | include/linux/nfs_fs.h | 41 |
1 files changed, 35 insertions, 6 deletions
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 4dff705d2ff274..d38010ba647717 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -38,9 +38,6 @@ # define NFS_DEBUG #endif -#define NFS_MAX_FILE_IO_BUFFER_SIZE 32768 -#define NFS_DEF_FILE_IO_BUFFER_SIZE 4096 - /* Default timeout values */ #define NFS_MAX_UDP_TIMEOUT (60*HZ) #define NFS_MAX_TCP_TIMEOUT (600*HZ) @@ -462,18 +459,33 @@ static inline int nfs_wb_page(struct inode *inode, struct page* page) */ extern mempool_t *nfs_wdata_mempool; -static inline struct nfs_write_data *nfs_writedata_alloc(void) +static inline struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount) { struct nfs_write_data *p = mempool_alloc(nfs_wdata_mempool, SLAB_NOFS); + if (p) { memset(p, 0, sizeof(*p)); INIT_LIST_HEAD(&p->pages); + if (pagecount < NFS_PAGEVEC_SIZE) + p->pagevec = &p->page_array[0]; + else { + size_t size = ++pagecount * sizeof(struct page *); + p->pagevec = kmalloc(size, GFP_NOFS); + if (p->pagevec) { + memset(p->pagevec, 0, size); + } else { + mempool_free(p, nfs_wdata_mempool); + p = NULL; + } + } } return p; } static inline void nfs_writedata_free(struct nfs_write_data *p) { + if (p && (p->pagevec != &p->page_array[0])) + kfree(p->pagevec); mempool_free(p, nfs_wdata_mempool); } @@ -492,16 +504,33 @@ extern void nfs_readdata_release(void *data); */ extern mempool_t *nfs_rdata_mempool; -static inline struct nfs_read_data *nfs_readdata_alloc(void) +static inline struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount) { struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, SLAB_NOFS); - if (p) + + if (p) { memset(p, 0, sizeof(*p)); + INIT_LIST_HEAD(&p->pages); + if (pagecount < NFS_PAGEVEC_SIZE) + p->pagevec = &p->page_array[0]; + else { + size_t size = ++pagecount * sizeof(struct page *); + p->pagevec = kmalloc(size, GFP_NOFS); + if (p->pagevec) { + memset(p->pagevec, 0, size); + } else { + mempool_free(p, nfs_rdata_mempool); + p = NULL; + } + } + } return p; } static inline void nfs_readdata_free(struct nfs_read_data *p) { + if (p && (p->pagevec != &p->page_array[0])) + kfree(p->pagevec); mempool_free(p, nfs_rdata_mempool); } |