ext4: prevent ext4_quota_write() from failing due to ENOSPC

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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>

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This commit is contained in:

Theodore Ts'o 2015-06-21 01:25:29 -04:00

parent 89d96a6f8e

commit c5e298ae53

5 changed files with 17 additions and 7 deletions

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2

fs/ext4/extents.c

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2

fs/ext4/indirect.c

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10

fs/ext4/inode.c

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2

fs/ext4/namei.c

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8

fs/ext4/super.c

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