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Big thanks go to Mathias Kolehmainen for reporting the bug, providing debug output and testing the patches I sent him to get it working. The fix was to stop calling ntfs_attr_set() at mount time as that causes balance_dirty_pages_ratelimited() to be called which on systems with little memory actually tries to go and balance the dirty pages which tries to take the s_umount semaphore but because we are still in fill_super() across which the VFS holds s_umount for writing this results in a deadlock. We now do the dirty work by hand by submitting individual buffers. This has the annoying "feature" that mounting can take a few seconds if the journal is large as we have clear it all. One day someone should improve on this by deferring the journal clearing to a helper kernel thread so it can be done in the background but I don't have time for this at the moment and the current solution works fine so I am leaving it like this for now. Signed-off-by: Anton Altaparmakov <aia21@cantab.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| aops.c | ||
| aops.h | ||
| attrib.c | ||
| attrib.h | ||
| bitmap.c | ||
| bitmap.h | ||
| ChangeLog | ||
| collate.c | ||
| collate.h | ||
| compress.c | ||
| debug.c | ||
| debug.h | ||
| dir.c | ||
| dir.h | ||
| endian.h | ||
| file.c | ||
| index.c | ||
| index.h | ||
| inode.c | ||
| inode.h | ||
| layout.h | ||
| lcnalloc.c | ||
| lcnalloc.h | ||
| logfile.c | ||
| logfile.h | ||
| Makefile | ||
| malloc.h | ||
| mft.c | ||
| mft.h | ||
| mst.c | ||
| namei.c | ||
| ntfs.h | ||
| quota.c | ||
| quota.h | ||
| runlist.c | ||
| runlist.h | ||
| super.c | ||
| sysctl.c | ||
| sysctl.h | ||
| time.h | ||
| types.h | ||
| unistr.c | ||
| upcase.c | ||
| usnjrnl.c | ||
| usnjrnl.h | ||
| volume.h | ||