This series fixes a race between writepages and enabling EXT4_EXTENTS_FL
that could cause a WARN_ON() in ext4_add_complete_io() to be hit. Patch
1 is a trivial renaming in preparation for patch 2 which is the actual
fix. See patch 2 for the full details.
Changed in v3:
Do the renaming in a separate patch.
Changed in v2:
Instead of making ext4_writepages() read EXT4_EXTENTS_FL only once,
make it so that EXT4_EXTENTS_FL can't be changed while
ext4_writepages() is running.
Eric Biggers (2):
ext4: rename s_journal_flag_rwsem to s_writepages_rwsem
ext4: fix race between writepages and enabling EXT4_EXTENTS_FL
fs/ext4/ext4.h | 7 +++++--
fs/ext4/inode.c | 14 +++++++-------
fs/ext4/migrate.c | 27 +++++++++++++++++++--------
fs/ext4/super.c | 6 +++---
4 files changed, 34 insertions(+), 20 deletions(-)
base-commit: c96dceeabf765d0b1b1f29c3bf50a5c01315b820
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2.25.0
