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| author | Josef Bacik <josef@redhat.com> | 2011-09-21 21:05:58 +0200 |
|---|---|---|
| committer | Josef Bacik <josef@redhat.com> | 2011-10-19 21:12:45 +0200 |
| commit | 3b16a4e3c355ee3c790473decfcf83d4faeb8ce0 (patch) | |
| tree | 5c3dad941468cf6952623cc18d6b1e682ee3f264 /fs/btrfs/ctree.h | |
| parent | Btrfs: delay iput when deleting a block group (diff) | |
| download | linux-3b16a4e3c355ee3c790473decfcf83d4faeb8ce0.tar.xz linux-3b16a4e3c355ee3c790473decfcf83d4faeb8ce0.zip | |
Btrfs: use the inode's mapping mask for allocating pages
Johannes pointed out we were allocating only kernel pages for doing writes,
which is kind of a big deal if you are on 32bit and have more than a gig of ram.
So fix our allocations to use the mapping's gfp but still clear __GFP_FS so we
don't re-enter. Thanks,
Reported-by: Johannes Weiner <jweiner@redhat.com>
Signed-off-by: Josef Bacik <josef@redhat.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index a5faf8e33baa..47dea7118e0e 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -30,6 +30,7 @@ #include <linux/kobject.h> #include <trace/events/btrfs.h> #include <asm/kmap_types.h> +#include <linux/pagemap.h> #include "extent_io.h" #include "extent_map.h" #include "async-thread.h" @@ -2117,6 +2118,11 @@ static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); } +static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) +{ + return mapping_gfp_mask(mapping) & ~__GFP_FS; +} + /* extent-tree.c */ static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, unsigned num_items) |