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Because code paths for I/O requests are quite complex, add comments above

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the functions which participate in I/O paths.

MFC after:	1 day
This commit is contained in:
Pawel Jakub Dawidek 2005-08-13 17:45:37 +00:00
parent 29f0e92957
commit bb30fea667
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=149030
1 changed files with 12 additions and 0 deletions
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12
sys/geom/eli/g_eli.c
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@ -135,6 +135,8 @@ g_eli_crypto_rerun(struct cryptop *crp)
/*
* The function is called afer reading encrypted data from the provider.
*
* g_eli_start -> g_io_request -> G_ELI_READ_DONE -> g_eli_crypto_run -> g_eli_crypto_read_done -> g_io_deliver
*/
static void
g_eli_read_done(struct bio *bp)
@ -181,6 +183,8 @@ g_eli_read_done(struct bio *bp)
/*
* The function is called after we read and decrypt data.
*
* g_eli_start -> g_io_request -> g_eli_read_done -> g_eli_crypto_run -> G_ELI_CRYPTO_READ_DONE -> g_io_deliver
*/
static int
g_eli_crypto_read_done(struct cryptop *crp)
@ -224,6 +228,8 @@ g_eli_crypto_read_done(struct cryptop *crp)
/*
* The function is called after we encrypt and write data.
*
* g_eli_start -> g_eli_crypto_run -> g_eli_crypto_write_done -> g_io_request -> G_ELI_WRITE_DONE -> g_io_deliver
*/
static void
g_eli_write_done(struct bio *bp)
@ -252,6 +258,8 @@ g_eli_write_done(struct bio *bp)
/*
* The function is called after data encryption.
*
* g_eli_start -> g_eli_crypto_run -> G_ELI_CRYPTO_WRITE_DONE -> g_io_request -> g_eli_write_done -> g_io_deliver
*/
static int
g_eli_crypto_write_done(struct cryptop *crp)
@ -329,6 +337,10 @@ g_eli_orphan(struct g_consumer *cp)
g_eli_destroy(sc, 1);
}
/*
* BIO_READ : G_ELI_START -> g_io_request -> g_eli_read_done -> g_eli_crypto_run -> g_eli_crypto_read_done -> g_io_deliver
* BIO_WRITE: G_ELI_START -> g_eli_crypto_run -> g_eli_crypto_write_done -> g_io_request -> g_eli_write_done -> g_io_deliver
*/
static void
g_eli_start(struct bio *bp)
{