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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/file.c | |
| 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/file.c')
| -rw-r--r-- | fs/btrfs/file.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index de569af766fe..f2e928289600 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1069,6 +1069,7 @@ static noinline int prepare_pages(struct btrfs_root *root, struct file *file, int i; unsigned long index = pos >> PAGE_CACHE_SHIFT; struct inode *inode = fdentry(file)->d_inode; + gfp_t mask = btrfs_alloc_write_mask(inode->i_mapping); int err = 0; int faili = 0; u64 start_pos; @@ -1080,7 +1081,7 @@ static noinline int prepare_pages(struct btrfs_root *root, struct file *file, again: for (i = 0; i < num_pages; i++) { pages[i] = find_or_create_page(inode->i_mapping, index + i, - GFP_NOFS); + mask); if (!pages[i]) { faili = i - 1; err = -ENOMEM; |