forked from luck/tmp_suning_uos_patched
530576bbf3
journal_try_to_free_buffers() could race with jbd commit transaction when the later is holding the buffer reference while waiting for the data buffer to flush to disk. If the caller of journal_try_to_free_buffers() request tries hard to release the buffers, it will treat the failure as error and return back to the caller. We have seen the directo IO failed due to this race. Some of the caller of releasepage() also expecting the buffer to be dropped when passed with GFP_KERNEL mask to the releasepage()->journal_try_to_free_buffers(). With this patch, if the caller is passing the GFP_KERNEL to indicating this call could wait, in case of try_to_free_buffers() failed, let's waiting for journal_commit_transaction() to finish commit the current committing transaction , then try to free those buffers again with journal locked. Signed-off-by: Mingming Cao <cmm@us.ibm.com> Reviewed-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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| .. | ||
| checkpoint.c | ||
| commit.c | ||
| journal.c | ||
| Makefile | ||
| recovery.c | ||
| revoke.c | ||
| transaction.c | ||