Fix error handling in pg_flush_data() and FilePrefetch() posix_fadvise() returns an error code directly instead of setting errno. However, pg_flush_data() uses %m and errcode_for_file_access() to report errors without setting errno, potentially reporting an unrelated error. Fix this by assigning the returned error code to errno before reporting the error.
FilePrefetch() is documented to return an errno error code on failure, but it returns -1 when FileAccess() fails. Fix this by returning errno instead. The first bug one only affects a warning, and the second doesn't have any effect because the only existing caller ignores the return value. So these are pretty harmless bugs, but let's be tidy. Author: Chao Li <[email protected]> Discussion: https://www.postgresql.org/message-id/[email protected] Backpatch-through: 14 Branch ------ REL_15_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/a1d165d63cc8f3574882e75f8a0924544dcbe7ed Modified Files -------------- src/backend/storage/file/fd.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
