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Redfs support for rhel kernel-5.14.0-503.40.1.el9-5 #11

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Merged
merged 11 commits into from
Aug 6, 2025
Merged

Redfs support for rhel kernel-5.14.0-503.40.1.el9-5 #11

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3b0ae3b
fuse: add DLM_LOCK opcode
bsbernd Jun 20, 2025
d126533
fuse: invalidate inode aliases when doing inode invalidation
yongzech Jul 8, 2025
9cd8b25
fuse: Renumber FUSE_DLM_WB_LOCK to 100
cding-ddn Jul 17, 2025
360f652
fuse: Send DLM_WB_LOCK request in page_mkwrite handler
cding-ddn Jul 16, 2025
02eecf9
fuse: Allow read_folio to retry page fault and read operations
cding-ddn Jul 16, 2025
14e0495
fuse: flush pending fuse events before aborting the connection
Jul 17, 2025
cd90b4d
fuse: Refactor io-uring bg queue flush and queue abort
bsbernd Jul 18, 2025
487773b
fuse: Flush the io-uring bg queue from fuse_uring_flush_bg
bsbernd Jul 18, 2025
5e4332c
fuse: avoid tmp copying of data for writeback pages
hbirth Jul 7, 2025
bccb169
fuse: fix unnecessary connection abort in dlm lock acquiring
hbirth Jul 21, 2025
3898d27
fuse: fix connection abort on mmap when fuse server returns ENOSYS
hbirth Jul 21, 2025
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fuse: Allow read_folio to retry page fault and read operations 
Allow read_folio to return EAGAIN error and translate it to
AOP_TRUNCATE_PAGE to retry page fault and read operations.
This is used to prevent deadlock of folio lock/DLM lock order reversal:
 - Fault or read operations acquire folio lock first, then DLM lock.
 - FUSE daemon blocks new DLM lock acquisition while it invalidating
   page cache. invalidate_inode_pages2_range() acquires folio lock
To prevent deadlock, the FUSE daemon will fail its DLM lock acquisition
with EAGAIN if it detects an in-flight page cache invalidating
operation.

Signed-off-by: Cheng Ding <[email protected]>
(cherry picked from commit 8ecf118)
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@cding-ddn @jianhuangli
cding-ddn authored and jianhuangli committed Jul 25, 2025
commit 02eecf926a8e520597d5396e7829e0a7fabb6bcf
5 changes: 4 additions & 1 deletion fs/fuse/file.c
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Original file line number Diff line number Diff line change
Expand Up @@ -879,8 +879,11 @@ static int fuse_do_readpage(struct file *file, struct page *page)

fuse_read_args_fill(&ia, file, pos, desc.length, FUSE_READ);
res = fuse_simple_request(fm, &ia.ap.args);
if (res < 0)
if (res < 0) {
if (res == -EAGAIN)
res = AOP_TRUNCATED_PAGE;
return res;
}
/*
* Short read means EOF. If file size is larger, truncate it
*/
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