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| author | Theodore Ts'o <tytso@mit.edu> | 2015-06-21 01:25:29 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2015-06-21 01:25:29 -0400 |
| commit | c5e298ae53dc2eb69f2f7153be03454c8a33c658 (patch) | |
| tree | 07bd2e74badcff3d55627b2f315b1640bbde15d8 /fs/ext4/inode.c | |
| parent | 89d96a6f8e6491f24fc8f99fd6ae66820e85c6c1 (diff) | |
| download | lwn-c5e298ae53dc2eb69f2f7153be03454c8a33c658.tar.gz lwn-c5e298ae53dc2eb69f2f7153be03454c8a33c658.zip | |
ext4: prevent ext4_quota_write() from failing due to ENOSPC
In order to prevent quota block tracking to be inaccurate when
ext4_quota_write() fails with ENOSPC, we make two changes. The quota
file can now use the reserved block (since the quota file is arguably
file system metadata), and ext4_quota_write() now uses
ext4_should_retry_alloc() to retry the block allocation after a commit
has completed and released some blocks for allocation.
This fixes failures of xfstests generic/270:
Quota error (device vdc): write_blk: dquota write failed
Quota error (device vdc): qtree_write_dquot: Error -28 occurred while creating quota
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 263a46c488c7..e8a67b8ba90c 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -731,18 +731,18 @@ int ext4_get_block(struct inode *inode, sector_t iblock, * `handle' can be NULL if create is zero */ struct buffer_head *ext4_getblk(handle_t *handle, struct inode *inode, - ext4_lblk_t block, int create) + ext4_lblk_t block, int map_flags) { struct ext4_map_blocks map; struct buffer_head *bh; + int create = map_flags & EXT4_GET_BLOCKS_CREATE; int err; J_ASSERT(handle != NULL || create == 0); map.m_lblk = block; map.m_len = 1; - err = ext4_map_blocks(handle, inode, &map, - create ? EXT4_GET_BLOCKS_CREATE : 0); + err = ext4_map_blocks(handle, inode, &map, map_flags); if (err == 0) return create ? ERR_PTR(-ENOSPC) : NULL; @@ -788,11 +788,11 @@ errout: } struct buffer_head *ext4_bread(handle_t *handle, struct inode *inode, - ext4_lblk_t block, int create) + ext4_lblk_t block, int map_flags) { struct buffer_head *bh; - bh = ext4_getblk(handle, inode, block, create); + bh = ext4_getblk(handle, inode, block, map_flags); if (IS_ERR(bh)) return bh; if (!bh || buffer_uptodate(bh)) |