fuse: fix inode initialization race#132
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hbirth merged 1 commit intoDDNStorage:redfs-rhel9_4-427.42.1from Mar 19, 2026
Merged
fuse: fix inode initialization race#132hbirth merged 1 commit intoDDNStorage:redfs-rhel9_4-427.42.1from
hbirth merged 1 commit intoDDNStorage:redfs-rhel9_4-427.42.1from
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Fix a race between fuse_iget() and fuse_reverse_inval_inode() where invalidation can arrive while an inode is being initialized, causing the invalidation to be lost. Add a waitqueue to make fuse_reverse_inval_inode() wait when it encounters an inode with attr_version == 0 (still initializing). When fuse_change_attributes_common() completes initialization, it wakes waiting threads. This ensures invalidations are properly serialized with inode initialization, maintaining cache coherency. Signed-off-by: Horst Birthelmer <hbirthelmer@ddn.com> (cherry picked from commit 03eacfd)
bsbernd
approved these changes
Mar 19, 2026
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Fix a race between fuse_iget() and fuse_reverse_inval_inode() where invalidation can arrive while an inode is being initialized, causing the invalidation to be lost.
Add a waitqueue to make fuse_reverse_inval_inode() wait when it encounters an inode with attr_version == 0 (still initializing). When fuse_change_attributes_common() completes initialization, it wakes waiting threads.
This ensures invalidations are properly serialized with inode initialization, maintaining cache coherency.
(cherry picked from commit 03eacfd)