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d1c88cbd4c
If the kernel will honour our error returns, use them. If not, fool it by setting a writeback error on the superblock, if available. Sponsored-by: Klara, Inc. Sponsored-by: Wasabi Technology, Inc. Reviewed-by: Paul Dagnelie <paul.dagnelie@klarasystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Closes #17420
28 lines
782 B
Plaintext
28 lines
782 B
Plaintext
# dnl
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# dnl 5.8 (735e4ae5ba28) introduced a superblock scoped errseq_t to use to
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# dnl record writeback errors for syncfs() to return. Up until 5.17, when
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# dnl sync_fs errors were returned directly, this is the only way for us to
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# dnl report an error from syncfs().
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# dnl
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AC_DEFUN([ZFS_AC_KERNEL_SRC_SUPER_BLOCK_S_WB_ERR], [
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ZFS_LINUX_TEST_SRC([super_block_s_wb_err], [
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#include <linux/fs.h>
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static const struct super_block
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sb __attribute__ ((unused)) = {
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.s_wb_err = 0,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_SUPER_BLOCK_S_WB_ERR], [
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AC_MSG_CHECKING([whether super_block has s_wb_err])
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ZFS_LINUX_TEST_RESULT([super_block_s_wb_err], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_SUPER_BLOCK_S_WB_ERR, 1,
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[have super_block s_wb_err])
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],[
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AC_MSG_RESULT(no)
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])
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])
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