Revision 38d78e587d4960d0db94add518d27ee74bad2301 authored by Vladimir Davydov on 22 March 2013, 22:04:51 UTC, committed by Linus Torvalds on 22 March 2013, 23:41:21 UTC
mnt_drop_write() must be called only if mnt_want_write() succeeded, otherwise the mnt_writers counter will diverge. mnt_writers counters are used to check if remounting FS as read-only is OK, so after an extra mnt_drop_write() call, it would be impossible to remount mqueue FS as read-only. Besides, on umount a warning would be printed like this one: ===================================== [ BUG: bad unlock balance detected! ] 3.9.0-rc3 #5 Not tainted ------------------------------------- a.out/12486 is trying to release lock (sb_writers) at: mnt_drop_write+0x1f/0x30 but there are no more locks to release! Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Doug Ledford <dledford@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| File | Mode | Size |
|---|---|---|
| asymmetric_keys | ||
| async_tx | ||
| 842.c | -rw-r--r-- | 4.6 KB |
| Kconfig | -rw-r--r-- | 36.3 KB |
| Makefile | -rw-r--r-- | 3.5 KB |
| ablkcipher.c | -rw-r--r-- | 18.2 KB |
| aead.c | -rw-r--r-- | 14.0 KB |
| aes_generic.c | -rw-r--r-- | 61.9 KB |
| af_alg.c | -rw-r--r-- | 9.3 KB |
| ahash.c | -rw-r--r-- | 12.7 KB |
| algapi.c | -rw-r--r-- | 19.8 KB |
| algboss.c | -rw-r--r-- | 6.4 KB |
| algif_hash.c | -rw-r--r-- | 6.8 KB |
| algif_skcipher.c | -rw-r--r-- | 13.2 KB |
| ansi_cprng.c | -rw-r--r-- | 10.8 KB |
| anubis.c | -rw-r--r-- | 27.8 KB |
| api.c | -rw-r--r-- | 13.4 KB |
| arc4.c | -rw-r--r-- | 3.4 KB |
| authenc.c | -rw-r--r-- | 19.6 KB |
| authencesn.c | -rw-r--r-- | 23.4 KB |
| blkcipher.c | -rw-r--r-- | 19.4 KB |
| blowfish_common.c | -rw-r--r-- | 15.7 KB |
| blowfish_generic.c | -rw-r--r-- | 3.4 KB |
| camellia_generic.c | -rw-r--r-- | 34.9 KB |
| cast5_generic.c | -rw-r--r-- | 20.8 KB |
| cast6_generic.c | -rw-r--r-- | 9.5 KB |
| cast_common.c | -rw-r--r-- | 13.1 KB |
| cbc.c | -rw-r--r-- | 7.4 KB |
| ccm.c | -rw-r--r-- | 21.4 KB |
| chainiv.c | -rw-r--r-- | 8.5 KB |
| cipher.c | -rw-r--r-- | 3.3 KB |
| compress.c | -rw-r--r-- | 1.3 KB |
| crc32.c | -rw-r--r-- | 3.7 KB |
| crc32c.c | -rw-r--r-- | 4.3 KB |
| cryptd.c | -rw-r--r-- | 24.9 KB |
| crypto_null.c | -rw-r--r-- | 4.4 KB |
| crypto_user.c | -rw-r--r-- | 12.3 KB |
| crypto_wq.c | -rw-r--r-- | 968 bytes |
| ctr.c | -rw-r--r-- | 12.3 KB |
| cts.c | -rw-r--r-- | 9.8 KB |
| deflate.c | -rw-r--r-- | 5.4 KB |
| des_generic.c | -rw-r--r-- | 35.3 KB |
| ecb.c | -rw-r--r-- | 4.9 KB |
| eseqiv.c | -rw-r--r-- | 6.5 KB |
| fcrypt.c | -rw-r--r-- | 18.0 KB |
| fips.c | -rw-r--r-- | 705 bytes |
| gcm.c | -rw-r--r-- | 34.3 KB |
| gf128mul.c | -rw-r--r-- | 13.2 KB |
| ghash-generic.c | -rw-r--r-- | 3.7 KB |
| hmac.c | -rw-r--r-- | 6.9 KB |
| internal.h | -rw-r--r-- | 3.9 KB |
| khazad.c | -rw-r--r-- | 51.8 KB |
| krng.c | -rw-r--r-- | 1.4 KB |
| lrw.c | -rw-r--r-- | 9.2 KB |
| lzo.c | -rw-r--r-- | 2.4 KB |
| md4.c | -rw-r--r-- | 6.2 KB |
| md5.c | -rw-r--r-- | 3.9 KB |
| michael_mic.c | -rw-r--r-- | 3.6 KB |
| pcbc.c | -rw-r--r-- | 7.7 KB |
| pcompress.c | -rw-r--r-- | 3.0 KB |
| pcrypt.c | -rw-r--r-- | 14.7 KB |
| proc.c | -rw-r--r-- | 3.7 KB |
| ripemd.h | -rw-r--r-- | 974 bytes |
| rmd128.c | -rw-r--r-- | 10.2 KB |
| rmd160.c | -rw-r--r-- | 12.6 KB |
| rmd256.c | -rw-r--r-- | 10.5 KB |
| rmd320.c | -rw-r--r-- | 13.1 KB |
| rng.c | -rw-r--r-- | 3.3 KB |
| salsa20_generic.c | -rw-r--r-- | 6.7 KB |
| scatterwalk.c | -rw-r--r-- | 2.9 KB |
| seed.c | -rw-r--r-- | 17.4 KB |
| seqiv.c | -rw-r--r-- | 8.5 KB |
| serpent_generic.c | -rw-r--r-- | 21.2 KB |
| sha1_generic.c | -rw-r--r-- | 3.5 KB |
| sha256_generic.c | -rw-r--r-- | 12.0 KB |
| sha512_generic.c | -rw-r--r-- | 8.5 KB |
| shash.c | -rw-r--r-- | 17.5 KB |
| tcrypt.c | -rw-r--r-- | 44.0 KB |
| tcrypt.h | -rw-r--r-- | 3.6 KB |
| tea.c | -rw-r--r-- | 6.6 KB |
| testmgr.c | -rw-r--r-- | 65.0 KB |
| testmgr.h | -rw-r--r-- | 917.9 KB |
| tgr192.c | -rw-r--r-- | 30.5 KB |
| twofish_common.c | -rw-r--r-- | 37.8 KB |
| twofish_generic.c | -rw-r--r-- | 6.2 KB |
| vmac.c | -rw-r--r-- | 18.9 KB |
| wp512.c | -rw-r--r-- | 59.7 KB |
| xcbc.c | -rw-r--r-- | 7.2 KB |
| xor.c | -rw-r--r-- | 4.0 KB |
| xts.c | -rw-r--r-- | 8.7 KB |
| zlib.c | -rw-r--r-- | 9.5 KB |
Computing file changes ...
