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The following commit(s) were added to refs/heads/master by this push:
new 39dabe979eb fs/mmap: Retry rammap I/O after signal interruption
39dabe979eb is described below
commit 39dabe979ebc196dff315fc6b22bb865767fdeb0
Author: chao an <[email protected]>
AuthorDate: Wed Oct 28 14:15:48 2026 +0800
fs/mmap: Retry rammap I/O after signal interruption
rammap() and msync_rammap() treat -EINTR as a retryable file I/O result,
but still advanced the transfer buffer and remaining length afterwards.
Since
-EINTR is negative, that can move the buffer backwards and increase the
remaining length.
Retry interrupted reads and writes without updating the transfer state.
Signed-off-by: chao an <[email protected]>
---
fs/mmap/fs_rammap.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/mmap/fs_rammap.c b/fs/mmap/fs_rammap.c
index eead13397e5..57f19232984 100644
--- a/fs/mmap/fs_rammap.c
+++ b/fs/mmap/fs_rammap.c
@@ -103,6 +103,8 @@ static int msync_rammap(FAR struct mm_map_entry_s *entry,
FAR void *start,
entry->offset, nwrite);
break;
}
+
+ continue;
}
/* Increment number of bytes written */
@@ -322,6 +324,8 @@ int rammap(FAR struct file *filep, FAR struct
mm_map_entry_s *entry,
ret = nread;
goto errout_with_region;
}
+
+ continue;
}
/* Check for end of file. */
